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National Boards => General Highway Talk => Topic started by: SkyPesos on October 04, 2021, 10:16:49 PM

Title: Random facts about interstates and US routes
Post by: SkyPesos on October 04, 2021, 10:16:49 PM
Post whatever random facts about interstates or US routes you have that you find interesting here. They can be as obvious, or as obscure as you like. I had plenty of facts over the past few weeks, but forgot about what all of them are about. Here's two I thought of in the shower today:

Of the x0 interstates (excluding wannabe I-30), I-10 interchanges with the most x5 interstates, while I-70 interchanges with the least. And none of them meet all 10 of them.
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)

Speaking of I-70, it's the only x0 without a 5xx 3di, a common odd first digit for 3dis for some reason, and sometimes, the only odd first digit 3di an interstate has (516, 520, 530, 579, etc). Also, I-40 doesn't have a 3xx 3di, another common first digit.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 04, 2021, 10:19:32 PM
I-25 is the only x5 interstate to interchange with only x0 2dis.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 04, 2021, 10:20:29 PM
Quote from: jlam on October 04, 2021, 10:19:32 PM
I-25 is the only x5 interstate to interchange with only x0 2dis.
I-76?

You're right historically though, when I-76 was I-80S.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 04, 2021, 10:30:55 PM
Quote from: SkyPesos on October 04, 2021, 10:20:29 PM
Quote from: jlam on October 04, 2021, 10:19:32 PM
I-25 is the only x5 interstate to interchange with only x0 2dis.
I-76?

You're right historically though, when I-76 was I-80S.
I can't believe I forgot the 76.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on October 04, 2021, 10:45:14 PM
Historic US Route 40 is better signed than most California State Highways.  Seriously, the City of Fairfield went crazy overboard with US 40 signage. 
Title: Re: Random facts about interstates and US routes
Post by: TheHighwayMan3561 on October 04, 2021, 11:54:20 PM
For its entre length in Wisconsin and a connecting piece of it in Minnesota, what became US 12 was coincidentally already called State Highway 12 in both states.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 04, 2021, 11:57:34 PM
Quote from: TheHighwayMan394 on October 04, 2021, 11:54:20 PM
For its entre length in Wisconsin and a connecting piece of it in Minnesota, what became US 12 was coincidentally already called State Highway 12 in both states.
How common is it for a US route to share the same number with the state route it replaced in a state? Besides what you had for US 12 in WI and MN, US 6 in Indiana used to be IN 6.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on October 05, 2021, 12:13:30 AM
For some reason, the small portion of Interstate 76 in Nebraska is signed north and south, despite having no interchanges in the state besides Interstate 80.
Title: Re: Random facts about interstates and US routes
Post by: kurumi on October 05, 2021, 01:04:21 AM
I-86 is (I think) the only route that has been signed in 3 separate locations (with no intent to connect them). Eventually, New York's 84 and 86 should intersect, so that each of the 86's has met with an 84.

I-86 is also part of (I also think) the only renumbering and revert between two 2-digit interstates (84 to 86 back to 84).

271 and 480 were the only 3dis of different parents to overlap. (Now 785 and 840 also do)
Title: Re: Random facts about interstates and US routes
Post by: Bruce on October 05, 2021, 01:15:03 AM
Quote from: SkyPesos on October 04, 2021, 11:57:34 PM
Quote from: TheHighwayMan394 on October 04, 2021, 11:54:20 PM
For its entre length in Wisconsin and a connecting piece of it in Minnesota, what became US 12 was coincidentally already called State Highway 12 in both states.
How common is it for a US route to share the same number with the state route it replaced in a state? Besides what you had for US 12 in WI and MN, US 6 in Indiana used to be IN 6.

US 2 was co-signed with a section of Primary State Highway 2 from Cashmere, WA to Spokane, WA, and later replaced it outright in the 1964 renumbering.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on October 05, 2021, 06:29:09 AM
Quote from: SkyPesos on October 04, 2021, 11:57:34 PM
Quote from: TheHighwayMan394 on October 04, 2021, 11:54:20 PM
For its entre length in Wisconsin and a connecting piece of it in Minnesota, what became US 12 was coincidentally already called State Highway 12 in both states.
How common is it for a US route to share the same number with the state route it replaced in a state? Besides what you had for US 12 in WI and MN, US 6 in Indiana used to be IN 6.

Virginia has done this, though not for the initial arrival of the US route.  These were all extended over state route designations of the same number:

US 13
US 17
US 33 (very short segment)
US 258
US 301
US 340
US 522

It appears NC/VA tried to get NC/VA 168 renumbered as US 168
Title: Re: Random facts about interstates and US routes
Post by: Quillz on October 05, 2021, 06:39:02 AM
Wyoming's Interstate 180 is not actually an interstate, or even a freeway. It has at-grade junctions, signal lights, etc. It's effectively a glorified 1-mile off-ramp. It's much more similar to Alaska's interstates, in that it has interstate funding, but doesn't conform to interstate standards. As to why it doesn't, I have no idea.
Title: Re: Random facts about interstates and US routes
Post by: Rothman on October 05, 2021, 06:52:13 AM
If it's shielded as an Interstate, it's an Interstate.
Title: Re: Random facts about interstates and US routes
Post by: GaryV on October 05, 2021, 07:26:54 AM
In Michigan, M-16 became US-16
Title: Re: Random facts about interstates and US routes
Post by: NWI_Irish96 on October 05, 2021, 08:44:31 AM
US routes 35 and 136 replaced Indiana state highways 21 and 34 after Indiana had established its state highway grid, which is why those two numbers are the only ones < 72 that are not on any state or US highway in Indiana.
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on October 05, 2021, 08:59:05 AM
US 6, the longest US Route ever. If it's still the longest or has relinquished that title to US 20, is up to debate (https://www.aaroads.com/forum/index.php?topic=27532.0).
US 30, the only US Route that has always gone coast to coast.
US 81, the true midline of the USA (although I feel US 281 is a better fit).

(All of those are catchphrases I say at BigRigTravels whenever Steve is on or crosses one of those routes. However there I assume US 20 is longer than US 6)

And unlike what happens with I-238, US 138 did in fact branch off a US 38, which was eaten by US 6 early on.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on October 05, 2021, 10:24:07 AM
AADT Facts

Highest 2di: 404,000 on I-75/I-85 in Atlanta
Lowest (signed) 2di: 854 on I-95 at the Canadian border in Maine
Lowest (signed, not at a border) 2di: 1,775 on I-90 in Wyoming between Buffalo and Gilette
Lowest (unsigned) 2di: 237 on I-A2 east of Delta Junction

Highest 3di: 377,600 on I-405 in Los Angeles
Lowest 3di: 1,875 on I-180 in Illinois

Highest primary US Route (*not multiplexed): 318,000 on US101 just west of I-405 in Los Angeles
Highest primary (specifically 1 or 2 digit) US Route*: 271,488 on US75 just south of I-635 in Dallas
Lowest primary US Route*: 27 on US3 at the Canadian border in New Hampshire
Lowest primary US Route* (not at a Canadian border): 52 on US87 on the north side of the gap in Wyoming
Lowest primary US Route* (not a "gimmicky" portion): 70 on US19W at the Tennessee/North Carolina border
Lowest primary US Route* (not "gimmicky" and not bannered): 207 on US64 just east of US84 in New Mexico

Highest secondary US Route*: 132,535 on US131 in downtown Grand Rapids
Lowest secondary US Route*:  16 on US191 at the Canadian border in Montana
Lowest secondary US Route* (not at a Canadian border): 134 on US385 north of Marathon, TX

Chris
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on October 05, 2021, 10:27:22 AM
Isn't US 101 considered a two digit US Route with the "10"  being an analog first digit?
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on October 05, 2021, 10:27:50 AM
More interstate facts than you can shake a stick at, although some of them are out of date:

https://www.fhwa.dot.gov/interstate/previousfacts.cfm

For example, there's this:

Quote
March 27, 2010:   The most common types of bridge on the Interstate System:

Stringer/Multi-beam or girder: 32,084 (58 percent)
Culvert: 8,203 (15 percent)
Slab: 5,449 (10 percent)
Box beam or girders (multiple): 3,555 (6 percent)
Tee beam: 3,009 (5 percent)

The Interstate System includes 22 suspension bridges.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on October 05, 2021, 10:44:19 AM
Quote from: Max Rockatansky on October 05, 2021, 10:27:22 AM
Isn't US 101 considered a two digit US Route with the "10"  being an analog first digit?

Perhaps so.  I'll create another asterisk and edit my above post.

Chris
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 12:08:16 PM
I-70 does not in fact go to Baltimore, the signs are mistaken.  :bigass:
Title: Re: Random facts about interstates and US routes
Post by: Mr. Matté on October 05, 2021, 12:17:33 PM
(https://i.imgur.com/3hP7mqN.png)
Title: Re: Random facts about interstates and US routes
Post by: jmacswimmer on October 05, 2021, 12:23:52 PM
Quote from: HighwayStar on October 05, 2021, 12:08:16 PM
I-70 does not in fact go to Baltimore, the signs are mistaken.  :bigass:
Neither does [insert examples of countless other routes that also don't serve the downtown of a control city they're signed for]  :bigass:
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 05, 2021, 12:27:17 PM
Quote from: HighwayStar on October 05, 2021, 12:08:16 PM
I-70 does not in fact go to Baltimore, the signs are mistaken.  :bigass:
The whole "I-70 Baltimore"  thing is what had me thinking about the number of x5s each x0 interstate interchanges with lol, as I-70 is the only x0 (excluding I-30 as usual) that doesn't meet I-95.

Related to that, of all the E-W interstates that go east of the Appalachians, I-66, I-70, I-84 and I-88 are the only ones that don't meet I-95. I-68 and I-86 are debatable, though I went with them having their eastern terminus in the Appalachians.
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on October 05, 2021, 12:27:56 PM
Quote from: SkyPesos on October 04, 2021, 10:16:49 PM
Post whatever random facts about interstates or US routes you have that you find interesting here. They can be as obvious, or as obscure as you like. I had plenty of facts over the past few weeks, but forgot about what all of them are about. Here's two I thought of in the shower today:

Of the x0 interstates (excluding wannabe I-30), I-10 interchanges with the most x5 interstates, while I-70 interchanges with the least. And none of them meet all 10 of them.
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)

Speaking of I-70, it's the only x0 without a 5xx 3di, a common odd first digit for 3dis for some reason, and sometimes, the only odd first digit 3di an interstate has (516, 520, 530, 579, etc). Also, I-40 doesn't have a 3xx 3di, another common first digit.

I-45 is a wannabe too, in my opinion.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 12:39:56 PM
Quote from: Mr. Matté on October 05, 2021, 12:17:33 PM
(https://i.imgur.com/3hP7mqN.png)

A park n ride in a woodlot is not Baltimore.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 05, 2021, 12:40:25 PM
I-94 is longest, non-principle, x0/x5 route.  :) and "is the only east—west Interstate to have a direct connection to Canada."
Title: Re: Random facts about interstates and US routes
Post by: I-35 on October 05, 2021, 12:43:21 PM
Quote from: jayhawkco on October 05, 2021, 10:24:07 AM
AADT Facts

Lowest (signed, not at a border) 2di: 1,700 in I-84 in Oregon just east of the I-82 intersection


This surprises me, as it suggests there is a higher amount of EB 84 traffic exiting towards 82 WB (and vice versa) - is there really more Tri Cities-PDX traffic than Boise-PDX traffic?
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on October 05, 2021, 12:54:57 PM
Quote from: I-35 on October 05, 2021, 12:43:21 PM
Quote from: jayhawkco on October 05, 2021, 10:24:07 AM
AADT Facts

Lowest (signed, not at a border) 2di: 1,700 in I-84 in Oregon just east of the I-82 intersection


This surprises me, as it suggests there is a higher amount of EB 84 traffic exiting towards 82 WB (and vice versa) - is there really more Tri Cities-PDX traffic than Boise-PDX traffic?

Yeah... I've been trying to verify it since it stood out to me also.  If only Oregon named things internally the same way they do externally.  Still looking at it.

Edit - Yeah, I'm not sure where OR Highway 2 branches off and I-84 becomes OR Highway 6, but looks like I read it wrong.  I'll update.

Chris
Title: Re: Random facts about interstates and US routes
Post by: I-35 on October 05, 2021, 01:07:10 PM
Quote from: jayhawkco on October 05, 2021, 12:54:57 PM
Quote from: I-35 on October 05, 2021, 12:43:21 PM
Quote from: jayhawkco on October 05, 2021, 10:24:07 AM
AADT Facts

Lowest (signed, not at a border) 2di: 1,700 in I-84 in Oregon just east of the I-82 intersection


This surprises me, as it suggests there is a higher amount of EB 84 traffic exiting towards 82 WB (and vice versa) - is there really more Tri Cities-PDX traffic than Boise-PDX traffic?

Yeah... I've been trying to verify it since it stood out to me also.  If only Oregon named things internally the same way they do externally.  Still looking at it.

Edit - Yeah, I'm not sure where OR Highway 2 branches off and I-84 becomes OR Highway 6, but looks like I read it wrong.  I'll update.

Chris

No problem - no doubt that it is desolate out there.  I figured the AADT was well under 10k.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.
Title: Re: Random facts about interstates and US routes
Post by: MCRoads on October 05, 2021, 01:17:35 PM
The last piece of the interstate system (as planned in the 50s) was Glenwood Canyon, a spectacular stretch of highway that started giving designers in the 80s, possibly before that, and continues to give highway workers headaches to this day. There were several alternatives for the design, but there are 3 notable ones that were never built:

Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 05, 2021, 01:18:50 PM
Quote from: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.
Isn't I-70 an exception, since I-29 starts at I-35 north of downtown KC, and I-49 starts at I-435/470 south of downtown KC?
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on October 05, 2021, 01:19:18 PM
Quote from: I-35 on October 05, 2021, 01:07:10 PM
Quote from: jayhawkco on October 05, 2021, 12:54:57 PM
Quote from: I-35 on October 05, 2021, 12:43:21 PM
Quote from: jayhawkco on October 05, 2021, 10:24:07 AM
AADT Facts

Lowest (signed, not at a border) 2di: 1,700 in I-84 in Oregon just east of the I-82 intersection


This surprises me, as it suggests there is a higher amount of EB 84 traffic exiting towards 82 WB (and vice versa) - is there really more Tri Cities-PDX traffic than Boise-PDX traffic?

Yeah... I've been trying to verify it since it stood out to me also.  If only Oregon named things internally the same way they do externally.  Still looking at it.

Edit - Yeah, I'm not sure where OR Highway 2 branches off and I-84 becomes OR Highway 6, but looks like I read it wrong.  I'll update.

Chris

No problem - no doubt that it is desolate out there.  I figured the AADT was well under 10k.

Actually no.  10,200 is the lowest it gets just SE of Baker City.

In case you were interested, a thread about the topic - https://www.aaroads.com/forum/index.php?topic=28578.msg2574297#msg2574297

Chris
Title: Re: Random facts about interstates and US routes
Post by: TheHighwayMan3561 on October 05, 2021, 01:21:10 PM
Quote from: SkyPesos on October 05, 2021, 01:18:50 PM
Quote from: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.
Isn't I-70 an exception, since I-29 starts at I-35 north of downtown KC, and I-49 starts at I-435/470 south of downtown KC?

I-29 duplexes with I-35 for 6 miles to end at I-70.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 05, 2021, 01:23:42 PM
Quote from: SkyPesos on October 05, 2021, 01:18:50 PM
Quote from: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.
Isn't I-70 an exception, since I-29 starts at I-35 north of downtown KC, and I-49 starts at I-435/470 south of downtown KC?
I-29's southern terminus is I-70, right where the 70 turns westbound and heads for downtown Kansas City, KS.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 05, 2021, 01:25:04 PM
Quote from: TheHighwayMan394 on October 05, 2021, 01:21:10 PM
Quote from: SkyPesos on October 05, 2021, 01:18:50 PM
Quote from: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.
Isn't I-70 an exception, since I-29 starts at I-35 north of downtown KC, and I-49 starts at I-435/470 south of downtown KC?

I-29 duplexes with I-35 for 6 miles to end at I-70.
Popped up while I was typing. But true.
Title: Re: Random facts about interstates and US routes
Post by: machias on October 05, 2021, 01:56:31 PM
I-90 in New York is the only interstate to have a complete "set" of 3dis.  190-990. Aside from I-990, they're arranged in order west to east.

Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 05, 2021, 02:31:02 PM
Quote from: SkyPesos on October 04, 2021, 10:16:49 PM
Post whatever random facts about interstates or US routes you have that you find interesting here. They can be as obvious, or as obscure as you like. I had plenty of facts over the past few weeks, but forgot about what all of them are about. Here's two I thought of in the shower today:

Of the x0 interstates (excluding wannabe I-30), I-10 interchanges with the most x5 interstates, while I-70 interchanges with the least. And none of them meet all 10 of them.
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)

Speaking of I-70, it's the only x0 without a 5xx 3di, a common odd first digit for 3dis for some reason, and sometimes, the only odd first digit 3di an interstate has (516, 520, 530, 579, etc). Also, I-40 doesn't have a 3xx 3di, another common first digit.

Interesting.

I have always thought about how the I-35/I-10 interchanges in San Antonio are the most "connected" interchanges in the system (fitting since they share an alignment too).  Since the aforementioned I-10 intersects with the most I-X5s and I-35 is the only I-X5 to intersect with all I-X0 interstates (I am not going to fight about how I-35 is actually 3 separate interstates and that it doesn't intersect with I-20 or I-30 since they actually intersect I-35E and I-35W from east to west respectively).  Basically the only one missing is I-85, but a short jaunt up I-65 from Mobile gets you to I-85 so it can be easily forgiven.

Separately, I-30 and I-85 are cousins, as they are the only interstates to default on both ends onto another "like" interstate (I-85 from I-65 to I-95 and I-30 from I-20 to I-40), making their short or relatively short life being part of a much larger route. 

On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important. 
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 05, 2021, 02:44:31 PM
Quote from: ethanhopkin14 on October 05, 2021, 02:31:02 PM
On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important.
Every interstate can be important depending on how you look at it, not just x0s and x5s. I-81 is a popular trucking route for its diagonal routing and that it avoids most major cities. For a shorter route near me, I-71 is part of the routing between cities in the mid-south region like Dallas, Houston and New Orleans to cities in Ohio and the northeast. Some people on this forums (including me) see I-71 sort of like an "I-69E" to the whole I-69 system, continuing the SW-NE trajectory of I-69.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 02:58:31 PM
Quote from: SkyPesos on October 05, 2021, 02:44:31 PM
Quote from: ethanhopkin14 on October 05, 2021, 02:31:02 PM
On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important.
Every interstate can be important depending on how you look at it, not just x0s and x5s. I-81 is a popular trucking route for its diagonal routing and that it avoids most major cities. For a shorter route near me, I-71 is part of the routing between cities in the mid-south region like Dallas, Houston and New Orleans to cities in Ohio and the northeast. Some people on this forums (including me) see I-71 sort of like an "I-69E" to the whole I-69 system, continuing the SW-NE trajectory of I-69.

As designed every interstate was important, the only way for them to be unimportant would be if there was a change in design that neutered them.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 05, 2021, 03:19:08 PM
Quote from: HighwayStar on October 05, 2021, 02:58:31 PM
Quote from: SkyPesos on October 05, 2021, 02:44:31 PM
Quote from: ethanhopkin14 on October 05, 2021, 02:31:02 PM
On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important.
Every interstate can be important depending on how you look at it, not just x0s and x5s. I-81 is a popular trucking route for its diagonal routing and that it avoids most major cities. For a shorter route near me, I-71 is part of the routing between cities in the mid-south region like Dallas, Houston and New Orleans to cities in Ohio and the northeast. Some people on this forums (including me) see I-71 sort of like an "I-69E" to the whole I-69 system, continuing the SW-NE trajectory of I-69.

As designed every interstate was important, the only way for them to be unimportant would be if there was a change in design that neutered them.

I can argue some are very less important. 
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 05, 2021, 03:21:33 PM
Quote from: ethanhopkin14 on October 05, 2021, 03:19:08 PM
Quote from: HighwayStar on October 05, 2021, 02:58:31 PM
Quote from: SkyPesos on October 05, 2021, 02:44:31 PM
Quote from: ethanhopkin14 on October 05, 2021, 02:31:02 PM
On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important.
Every interstate can be important depending on how you look at it, not just x0s and x5s. I-81 is a popular trucking route for its diagonal routing and that it avoids most major cities. For a shorter route near me, I-71 is part of the routing between cities in the mid-south region like Dallas, Houston and New Orleans to cities in Ohio and the northeast. Some people on this forums (including me) see I-71 sort of like an "I-69E" to the whole I-69 system, continuing the SW-NE trajectory of I-69.

As designed every interstate was important, the only way for them to be unimportant would be if there was a change in design that neutered them.

I can argue some are very less important.
I-180 serves the 3 people that lives in Hennepin, IL.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:
Title: Re: Random facts about interstates and US routes
Post by: I-35 on October 05, 2021, 03:59:36 PM
Quote from: jayhawkco on October 05, 2021, 01:19:18 PM
Actually no.  10,200 is the lowest it gets just SE of Baker City.

In case you were interested, a thread about the topic - https://www.aaroads.com/forum/index.php?topic=28578.msg2574297#msg2574297

Chris

Thanks, great thread!
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.
Title: Re: Random facts about interstates and US routes
Post by: Quillz on October 05, 2021, 05:27:43 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:
I-40 through Texas has several at-grade intersections with ranch roads.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on October 05, 2021, 05:27:51 PM
Quote from: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.

Where is the gap on I-95?  Obviously there used to be the one in Jersey...

Chris
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 05:30:22 PM
Quote from: jayhawkco on October 05, 2021, 05:27:51 PM
Quote from: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.

Where is the gap on I-95?  Obviously there used to be the one in Jersey...

Chris

DC, I-95 was never completed, they just slapped signs on I-495. However that is a beltway and thus was not the intent of the plan which was to serve DC.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 05, 2021, 05:47:11 PM
Quote from: HighwayStar on October 05, 2021, 05:30:22 PM
DC, I-95 was never completed, they just slapped signs on I-495. However that is a beltway and thus was not the intent of the plan which was to serve DC.

Ah, but I-95 does serve DC...

(https://i.imgur.com/gnKVU6r.png)
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 05, 2021, 05:47:27 PM
Quote from: HighwayStar on October 05, 2021, 05:30:22 PM
Quote from: jayhawkco on October 05, 2021, 05:27:51 PM
Quote from: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.

Where is the gap on I-95?  Obviously there used to be the one in Jersey...

Chris

DC, I-95 was never completed, they just slapped signs on I-495. However that is a beltway and thus was not the intent of the plan which was to serve DC.
In that case, how about Boston? Similar case with I-95 on MA 128.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 05, 2021, 05:48:12 PM
Quote from: SkyPesos on October 05, 2021, 05:47:27 PM
Quote from: HighwayStar on October 05, 2021, 05:30:22 PM
Quote from: jayhawkco on October 05, 2021, 05:27:51 PM
Quote from: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.

Where is the gap on I-95?  Obviously there used to be the one in Jersey...

Chris

DC, I-95 was never completed, they just slapped signs on I-495. However that is a beltway and thus was not the intent of the plan which was to serve DC.
In that case, how about Boston? Similar case with I-95 on MA 128.

Yep, another gap.
Title: Re: Random facts about interstates and US routes
Post by: kenarmy on October 05, 2021, 08:20:52 PM
I've posted some of these elsewhere but:

- US 49 had another split route in MS.
- US 98 used to be shorter than US 57 and was out of grid as well. It was also the longest intrastate US route.
- Ok but it is so shocking to me that US 278 is longer than US 80.
- US 1 is like a mile and a half from the southernmost point of the states.
Title: Re: Random facts about interstates and US routes
Post by: skluth on October 05, 2021, 08:39:29 PM
Many know about the Badger, the Lake Michigan ferry connecting US 10 in WI and MI. Fewer know about the MV Highway 16 which connected the the now decommissioned US 16 sections in Milwaukee WI and Muskegon MI.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 05, 2021, 09:04:27 PM
Quote from: kenarmy on October 05, 2021, 08:20:52 PM
- Ok but it is so shocking to me that US 278 is longer than US 80.

I actually didn't realize this. Looks like although 278 doesn't go as far west, it is a hell of a lot less direct.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 06, 2021, 10:05:20 AM
Quote from: HighwayStar on October 05, 2021, 05:48:12 PM
Quote from: SkyPesos on October 05, 2021, 05:47:27 PM
Quote from: HighwayStar on October 05, 2021, 05:30:22 PM
Quote from: jayhawkco on October 05, 2021, 05:27:51 PM
Quote from: HighwayStar on October 05, 2021, 04:52:29 PM
Quote from: US20IL64 on October 05, 2021, 03:42:15 PM
Is Breezewood PA the last 'gap' in the 1950's grid? And may "never" get filled?  :hmmm:

No, there are numerous other gaps. I-70, I-95, etc. that are even less likely to be filled, although all could be if we had some real leadership.

Where is the gap on I-95?  Obviously there used to be the one in Jersey...

Chris

DC, I-95 was never completed, they just slapped signs on I-495. However that is a beltway and thus was not the intent of the plan which was to serve DC.
In that case, how about Boston? Similar case with I-95 on MA 128.

Yep, another gap.

I meant when one has to leave highway and to surface road with stoplights, then get back on. Re-routing 95 to avoid tearing down DC neighborhoods is a redesign of route. Or, as with I-81 in Syracuse NY, moving it away from a city to reclaim land.
Title: Re: Random facts about interstates and US routes
Post by: Henry on October 06, 2021, 10:25:01 AM
Quote from: SkyPesos on October 04, 2021, 10:16:49 PM
Of the x0 interstates (excluding wannabe I-30), I-10 interchanges with the most x5 interstates, while I-70 interchanges with the least. And none of them meet all 10 of them.
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)
Well, since you mentioned x0s meeting x5s, I'm flipping the script and doing the reverse. And I'm doing the full list this time, including the impostor I-45 (and BTW, I-30, which was excluded from the above list, meets 35, albeit split into two, and 45).

5: 10, 80, 90 (3)
15: 10, 40, 70, 80, 90 (5)
25: 10, 40, 70, 80, 90 (5)
35: 10, 20, 30, 40, 70, 80, 90 (7)
45: 10, 20, 30 (3)
55: 10, 20, 40, 70, 80, 90 (6)
65: 10, 20, 40, 70, 80, 90 (6)
75: 10, 20, 40, 70, 80, 90 (6)
85: 20, 40 (2)
95: 10, 20, 40, 80, 90 (5)

So I-85 interchanges with the fewest x0 interstates, and I-35 interchanges with the most. Of course, I-50 and I-60 don't exist, so none of them will meet all 9. Had I-70 and I-95 met as planned, it would've been 7 for I-70 and 6 for I-95.
Title: Re: Random facts about interstates and US routes
Post by: jmacswimmer on October 06, 2021, 11:26:18 AM
Quote from: Henry on October 06, 2021, 10:25:01 AM
Quote from: SkyPesos on October 04, 2021, 10:16:49 PM
[list of x0's meeting x5's]
[list of x5's meeting x0's]
Of course, I-50 and I-60 don't exist, so none of them will meet all 9.

Personally I've always thought of I-44 as the closest thing to an I-50, I-64 as the closest thing to an I-60, and I-94 as the closest thing to an I-100 (similar to US 101).  So with that in mind, I'm going to expand on the above lists by including the (IMHO) de-facto I-50, I-60, & I-100:

94 (as 100): 35, 55, 65, 75 (4)
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
64 (as 60): 55, 65, 75, 95 (4)
44: (as 50): 35, 55 (2)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
30: 35, 45 (2)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)

5: 10, 80, 90 (3)
15: 10, 40, 70, 80, 90 (5)
25: 10, 40, 70, 80, 90 (5)
35: 10, 20, 30, 40, 44[50], 70, 80, 90, 94[100] (9)
45: 10, 20, 30 (3)
55: 10, 20, 40, 44[50], 64[60], 70, 80, 90, 94[100] (9)
65: 10, 20, 40, 64[60], 70, 80, 90, 94[100] (8)
75: 10, 20, 40, 64[60], 70, 80, 90, 94[100] (8)
85: 20, 40 (2)
95: 10, 20, 40, 64[60], 80, 90 (6)
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 06, 2021, 11:32:25 AM
^ I've always thought I-29/I-49 as a better I-45 than actual I-45 itself.

Also, if I-69 is completed, it'll be the third longest N-S interstate (using 69E as the "main" branch of the three in south Texas), only below I-95 and I-75. Pretty impressive for an interstate with a number that is a frequent target for sign theft.
Title: Re: Random facts about interstates and US routes
Post by: jmacswimmer on October 06, 2021, 11:40:28 AM
Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
^ I've always thought I-29/I-49 as a better I-45 than actual I-45 itself.

Agreed - and then I-45 could be a better I-41 than actual I-41!  :-D
[/fictional]

Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
Also, if I-69 is completed, it'll be the third longest N-S interstate (using 69E as the "main" branch of the three in south Texas), only below I-95 and I-75.

I think it would also dethrone I-94 for longest interstate not ending in 0 or 5?
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 06, 2021, 11:55:37 AM
Quote from: jmacswimmer on October 06, 2021, 11:40:28 AM
Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
Also, if I-69 is completed, it'll be the third longest N-S interstate (using 69E as the "main" branch of the three in south Texas), only below I-95 and I-75.

I think it would also dethrone I-94 for longest interstate not ending in 0 or 5?
Yes. I don't know the exact alignment through LA, AR and MS, but with a rough estimate, I got about 1705 miles in route length. For some comparison, I-35 is 1569 miles, I-94 is 1585 miles, and I-75 is 1786 miles. Another candidate for a longer I-45, and actually this one may be better, as Houston keeps their x5  :)
(https://i.imgur.com/ufjrMnV.png)
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on October 06, 2021, 12:30:36 PM
There is no gap in I-95. Or in I-70, except for Breezewood. In both cases, excepting Breezewood, the routes are continually signed on a freeway.

Now, I-69? There's a gap in it, between Bloomington and Indy, but that gap's being filled. There's a gap between Evansville and Henderson, but progress is being made on eliminating that gap. There's a gap between Mayfield and the area south of Memphis in Mississippi.

I would also say there are gaps in I-74, between the unfinished portions in North Carolina, but would not consider the section between Cincinnati and the NC/VA line to be a gap because there will never be an interstate between those two points. There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 06, 2021, 12:36:57 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.
That depends on who you ask. According to Google, it is one continuous segment. According to the signage on the freeway, there is a gap along that section, from Forks of Ivy to Asheville.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 06, 2021, 01:00:52 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
There is no gap in I-95. Or in I-70, except for Breezewood. In both cases, excepting Breezewood, the routes are continually signed on a freeway.

Now, I-69? There's a gap in it, between Bloomington and Indy, but that gap's being filled. There's a gap between Evansville and Henderson, but progress is being made on eliminating that gap. There's a gap between Mayfield and the area south of Memphis in Mississippi.

I would also say there are gaps in I-74, between the unfinished portions in North Carolina, but would not consider the section between Cincinnati and the NC/VA line to be a gap because there will never be an interstate between those two points. There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.

Those are both gaps, putting a sign on some other road does not fix that.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 06, 2021, 01:33:55 PM
I-76 and 88 have two sections, for examples, versus a "gap" like Breezwood. Though this is just my observation. ;-)
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on October 06, 2021, 03:47:50 PM
Quote from: jlam on October 06, 2021, 12:36:57 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.
That depends on who you ask. According to Google, it is one continuous segment. According to the signage on the freeway, there is a gap along that section, from Forks of Ivy to Asheville.

I trust the DOT over Google.

Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on October 06, 2021, 03:53:40 PM
The southern terminus of US 97 carries L suffix Postmiles over the segment of Weed Boulevard that was part of US 99.  The original terminus of US 97 is easily identified where it's Postmiles reset to unsuffixed 0.00.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on October 06, 2021, 03:55:49 PM
Quote from: hbelkins on October 06, 2021, 03:47:50 PM
Quote from: jlam on October 06, 2021, 12:36:57 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.
That depends on who you ask. According to Google, it is one continuous segment. According to the signage on the freeway, there is a gap along that section, from Forks of Ivy to Asheville.

I trust the DOT over Google.

Damn the DOT
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on October 06, 2021, 03:59:27 PM
Quote from: HighwayStar on October 06, 2021, 03:55:49 PM
Quote from: hbelkins on October 06, 2021, 03:47:50 PM
Quote from: jlam on October 06, 2021, 12:36:57 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.
That depends on who you ask. According to Google, it is one continuous segment. According to the signage on the freeway, there is a gap along that section, from Forks of Ivy to Asheville.

I trust the DOT over Google.

Damn the DOT

Is there a gap in the AASHTO definition? 
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 06, 2021, 04:05:03 PM
FHWA (https://hepgis.fhwa.dot.gov/fhwagis/) says the road between I-240 and the Buncombe-Madison county line is not an interstate.

Which is only funny because their own map has I-26 shields on that roadway.
Title: Re: Random facts about interstates and US routes
Post by: webny99 on October 06, 2021, 04:10:44 PM
Quote from: US 89 on October 06, 2021, 04:05:03 PM
FHWA (https://hepgis.fhwa.dot.gov/fhwagis/) says the road between I-240 and the Buncombe-Madison county line is not an interstate.

I agree (https://www.google.com/maps/@35.6953726,-82.613483,3a,39y,13.39h,86.08t/data=!3m6!1e1!3m4!1sPx2--xf0qtt7ltuyjP69hA!2e0!7i13312!8i6656!5m1!1e1)  ;-)
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 06, 2021, 04:19:37 PM
Quote from: webny99 on October 06, 2021, 04:10:44 PM
Quote from: US 89 on October 06, 2021, 04:05:03 PM
FHWA (https://hepgis.fhwa.dot.gov/fhwagis/) says the road between I-240 and the Buncombe-Madison county line is not an interstate.

I agree (https://www.google.com/maps/@35.6953726,-82.613483,3a,39y,13.39h,86.08t/data=!3m6!1e1!3m4!1sPx2--xf0qtt7ltuyjP69hA!2e0!7i13312!8i6656!5m1!1e1)  ;-)
:-D
Title: Re: Random facts about interstates and US routes
Post by: Rover_0 on October 06, 2021, 04:53:49 PM
It appears as though most 2di Interstates ending in 2 or 7 are shorter and/or intrastate (or at least near-intrastate) routes.

You have: 2, 12, 17, 27, 37, (Future) 42, 72, 82, (Northern) 87, and 97.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 06, 2021, 05:14:11 PM
Quote from: Rover_0 on October 06, 2021, 04:53:49 PM
It appears as though most 2di Interstates ending in 2 or 7 are shorter and/or intrastate (or at least near-intrastate) routes.

You have: 2, 12, 17, 27, 37, (Future) 42, 72, 82, (Northern) 87, and 97.

And seems like the 1's, 9's, 4's [6's?] are just under the 0/5's in importance.  :clap:

71/81, 29/49/59/69, 24/44/64/74/84 and 26/76/86
Title: Re: Random facts about interstates and US routes
Post by: MinecraftNinja on October 06, 2021, 10:48:08 PM
There are only 4 interstates that end in x3.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 06, 2021, 10:51:19 PM
Quote from: Rover_0 on October 06, 2021, 04:53:49 PM
It appears as though most 2di Interstates ending in 2 or 7 are shorter and/or intrastate (or at least near-intrastate) routes.

You have: 2, 12, 17, 27, 37, (Future) 42, 72, 82, (Northern) 87, and 97.
I-77 seems to be the exception to this, as well as I-57 with its extension to Little Rock.

Quote from: MinecraftNinja on October 06, 2021, 10:48:08 PM
There are only 4 interstates that end in x3.
43, 73, 83, 93?
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 06, 2021, 10:56:30 PM
Speaking of x2s, of the 17 2dus routes with the number 2 in it (20, 21, 22, 23, 24, 25, 26, 27, 29, 2, 12, 42, 52, 62, 72, 82, 92), 10 of them currently go, or formerly went, through Ohio (20, 21, 22, 23, 24, 25, 27, 42, 52, 62). Now, it would be interesting to see which state have the most 2dus routes with each number from 1-9.
Title: Re: Random facts about interstates and US routes
Post by: Crown Victoria on October 06, 2021, 11:46:40 PM
The only 2-digit numbers never used on the US Routes are 39, 47, 86, and 88.

With 39, 86 (twice currently, thrice in total), and 88 (twice) in use on the Interstate system, that leaves 47 as the only 2-digit number never used on either the Interstates or the US Routes.
Title: Re: Random facts about interstates and US routes
Post by: plain on October 07, 2021, 12:31:11 AM
There are currently four US routes signed on turnpikes: 51, 74, 301, 412.


I believe there was a US 30 Toll and a US 41 Toll that briefly existed in the late 1950's in IL.

US 278 in SC became toll free earlier this year.
Title: Re: Random facts about interstates and US routes
Post by: hotdogPi on October 07, 2021, 06:53:23 AM
Quote from: plain on October 07, 2021, 12:31:11 AM
There are currently four US routes signed on turnpikes: 51, 74, 301, 412.

US 3 is on part of the Everett Turnpike, but only the free section.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on October 07, 2021, 06:56:45 AM
Quote from: Crown Victoria on October 06, 2021, 11:46:40 PM
The only 2-digit numbers never used on the US Routes are 39, 47, 86, and 88.

With 39, 86 (twice currently, thrice in total), and 88 (twice) in use on the Interstate system, that leaves 47 as the only 2-digit number never used on either the Interstates or the US Routes.

US 86 has been explicitly requested at least twice...

Virginia in 1933 (became US 460 instead)
Alabama in more modern times (it is unclear where this was supposed to be)


Also, US 9 is on the Garden State Parkway
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 07, 2021, 07:22:07 AM
Quote from: Mapmikey on October 07, 2021, 06:56:45 AM
Virginia in 1933 (became US 460 instead)
Besides US 412, another good one to use the US 68 number on, instead of the current, pretty wasteful, one with the number.
Title: Re: Random facts about interstates and US routes
Post by: Crown Victoria on October 07, 2021, 08:05:26 AM
Quote from: Mapmikey on October 07, 2021, 06:56:45 AM
Quote from: Crown Victoria on October 06, 2021, 11:46:40 PM
The only 2-digit numbers never used on the US Routes are 39, 47, 86, and 88.

With 39, 86 (twice currently, thrice in total), and 88 (twice) in use on the Interstate system, that leaves 47 as the only 2-digit number never used on either the Interstates or the US Routes.

US 86 has been explicitly requested at least twice...

Virginia in 1933 (became US 460 instead)
Alabama in more modern times (it is unclear where this was supposed to be)


Also, US 9 is on the Garden State Parkway

But 86 was never assigned as a US Route, leaving it unused.

Title: Re: Random facts about interstates and US routes
Post by: plain on October 07, 2021, 08:51:15 AM
Quote from: Mapmikey on October 07, 2021, 06:56:45 AM
Also, US 9 is on the Garden State Parkway

Indeed, I often forget that SB US 9 must pay the toll at Great Egg Harbor.
Title: Re: Random facts about interstates and US routes
Post by: roadman65 on October 07, 2021, 08:53:05 AM
Quote from: 1 on October 07, 2021, 06:53:23 AM
Quote from: plain on October 07, 2021, 12:31:11 AM
There are currently four US routes signed on turnpikes: 51, 74, 301, 412.

US 3 is on part of the Everett Turnpike, but only the free section.

US 4 is also on the free Spaulding Turnpike Section.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 07, 2021, 09:42:24 AM
Quote from: plain on October 07, 2021, 08:51:15 AM
Quote from: Mapmikey on October 07, 2021, 06:56:45 AM
Also, US 9 is on the Garden State Parkway

Indeed, I often forget that SB US 9 must pay the toll at Great Egg Harbor.

I don't think that really counts though because it basically amounts to a bridge toll, and everywhere else US 9 joins the GSP does not require a toll.

If you count that, then you probably have to also count all the US highways that cross a toll bridge - US 1/9 on the GWB, US 6/202 on the Bear Mountain Bridge, US 101 over the Golden Gate...
Title: Re: Random facts about interstates and US routes
Post by: zachary_amaryllis on October 07, 2021, 09:56:54 AM
Quote from: Hobart on October 05, 2021, 12:13:30 AM
For some reason, the small portion of Interstate 76 in Nebraska is signed north and south, despite having no interchanges in the state besides Interstate 80.

and nebraska has that oddity of when an interstate ends, the junction inherits the exit numbers of the interstate its joining with.

the end of 76 is exit 102, instead of 1 or 0.
Title: Re: Random facts about interstates and US routes
Post by: plain on October 07, 2021, 10:16:57 AM
Quote from: US 89 on October 07, 2021, 09:42:24 AM
Quote from: plain on October 07, 2021, 08:51:15 AM
Quote from: Mapmikey on October 07, 2021, 06:56:45 AM
Also, US 9 is on the Garden State Parkway

Indeed, I often forget that SB US 9 must pay the toll at Great Egg Harbor.

I don't think that really counts though because it basically amounts to a bridge toll, and everywhere else US 9 joins the GSP does not require a toll.

If you count that, then you probably have to also count all the US highways that cross a toll bridge - US 1/9 on the GWB, US 6/202 on the Bear Mountain Bridge, US 101 over the Golden Gate...

Maybe, but then again it's a little more than a bridge toll considering that the last exit ramp on the Pkwy before it (Exit 30) is also tolled.
Title: Re: Random facts about interstates and US routes
Post by: Henry on October 07, 2021, 10:33:57 AM
Quote from: zachary_amaryllis on October 07, 2021, 09:56:54 AM
Quote from: Hobart on October 05, 2021, 12:13:30 AM
For some reason, the small portion of Interstate 76 in Nebraska is signed north and south, despite having no interchanges in the state besides Interstate 80.

and nebraska has that oddity of when an interstate ends, the junction inherits the exit numbers of the interstate its joining with.

the end of 76 is exit 102, instead of 1 or 0.
The eastern I-76 in NJ has exit numbers going the opposite direction, save for an eastbound Exit 354, which is a continuation of its numbering scheme in PA.
Title: Re: Random facts about interstates and US routes
Post by: Alps on October 07, 2021, 11:07:07 PM
The following are the only 2-digit Interstates that stay within 90 degrees of their signed direction at all times:
19, 27, 57, 97
2, 12, 14 (ha), 16, 22, 42 (ha ha), 72 EB (WB breaks at I-55), 76 western, 86 western

Of these, four are multi-state though only 22 really has significant length in both. 57 is by far the longest.
Title: Re: Random facts about interstates and US routes
Post by: Evan_Th on October 08, 2021, 12:31:09 AM
Quote from: Alps on October 07, 2021, 11:07:07 PM
The following are the only 2-digit Interstates that stay within 90 degrees of their signed direction at all times:
19, 27, 57, 97
2, 12, 14 (ha), 16, 22, 42 (ha ha), 72 EB (WB breaks at I-55), 76 western, 86 western

Of these, four are multi-state though only 22 really has significant length in both. 57 is by far the longest.

What about I-39?

I-57 almost fails to qualify due to the due east-west stretch in Missouri just west of 55.  And, it looks like I-41 and I-43 just barely fail to qualify thanks to Milwaukee.
Title: Re: Random facts about interstates and US routes
Post by: kurumi on October 08, 2021, 12:41:29 AM
US 1 in Florida (including the Keys) is only 19 miles longer than US 1 in Maine.
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on October 08, 2021, 10:51:13 AM
The western I-88 is one of the few single-state interstates that runs through a flat state.  :-D
Title: Re: Random facts about interstates and US routes
Post by: Dirt Roads on October 08, 2021, 03:33:20 PM
US-35 in West Virginia has gotten considerably shorter over time without getting truncated.

Silver Bridge (Point Pleasant) to US-60 Charleston, about 70 miles (original-1967)
New Silver Bridge (Kanauga) to US-60 St. Albans, about 45 miles (1969-2009)
New Silver Bridge (Kanauga) to CR-33 Scott Depot, about 37 miles (2009-2021?Maybe?)

I haven't seen the final tallies, but I suspect that when the four-lane is completed through Mason County that US-35 will be about half of its historical route length in the state.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on October 08, 2021, 03:50:51 PM
Quote from: hbelkins on October 08, 2021, 10:51:13 AM
The western I-88 is one of the few single-state interstates that runs through a flat state.  :-D

It's also haunted...  :wow:
Title: Re: Random facts about interstates and US routes
Post by: plain on October 08, 2021, 06:59:42 PM
Quote from: Dirt Roads on October 08, 2021, 03:33:20 PM
US-35 in West Virginia has gotten considerably shorter over time without getting truncated.

Silver Bridge (Point Pleasant) to US-60 Charleston, about 70 miles (original-1967)
New Silver Bridge (Kanauga) to US-60 St. Albans, about 45 miles (1969-2009)
New Silver Bridge (Kanauga) to CR-33 Scott Depot, about 37 miles (2009-2021?Maybe?)

I haven't seen the final tallies, but I suspect that when the four-lane is completed through Mason County that US-35 will be about half of its historical route length in the state.

That is definitely interesting
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 08, 2021, 07:04:33 PM
Quote from: Dirt Roads on October 08, 2021, 03:33:20 PM
US-35 in West Virginia has gotten considerably shorter over time without getting truncated.

Silver Bridge (Point Pleasant) to US-60 Charleston, about 70 miles (original-1967)
New Silver Bridge (Kanauga) to US-60 St. Albans, about 45 miles (1969-2009)
New Silver Bridge (Kanauga) to CR-33 Scott Depot, about 37 miles (2009-2021?Maybe?)

I haven't seen the final tallies, but I suspect that when the four-lane is completed through Mason County that US-35 will be about half of its historical route length in the state.
US 33 also got noticeably shorter in WV when it was moved from the Pomeroy-Mason Bridge over the Ohio River to the Ravenswood bridge it currently uses.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 09, 2021, 04:47:13 PM
Interstate 40 crosses four I-X7 interstates (planned for five with the I-57 extension).  Two of which terminate on their north end at I-40, and one terminates on it's south end at I-40.  I-X7 is the tied for third with I-X0 as the third most often repeated last digit in the system, behind X5(10) and X9(9)(just lacking CA-99 being re-signed as I-9).  Significant that it is repeated that often, yet only four cross the same transcontinental interstate.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 09, 2021, 05:07:21 PM
Quote from: ethanhopkin14 on October 09, 2021, 04:47:13 PM
Interstate 40 crosses four I-X7 interstates (planned for five with the I-57 extension).  Two of which terminate on their north end at I-40, and one terminates on it's south end at I-40.  I-X7 is the tied for third with I-X0 as the third most often repeated last digit in the system, behind X5(10) and X9(9)(just lacking CA-99 being re-signed as I-9).  Significant that it is repeated that often, yet only four cross the same transcontinental interstate.
What's the 5th? I only counted 17, 27, future 57 and 77. Also, there are some near-misses with other x0 and x7, like 90 and 57 are 3 miles apart at their closest point (used to meet historically when 94 used the Skyway), 80 and 87 are 5 miles apart, and 70 and 97 are 10 miles apart.

Also, there's only two concurrencies between an x0 and x7: I-57/70 and I-87/90.

Speaking of concurrencies: I-64 loses exit number continuity at every one of its concurrencies (with I-57, 75, 77, 81 and 95) except the short concurrency with I-55 in MO. 
Title: Re: Random facts about interstates and US routes
Post by: jlam on October 09, 2021, 05:11:27 PM
Quote from: SkyPesos on October 09, 2021, 05:07:21 PM
Quote from: ethanhopkin14 on October 09, 2021, 04:47:13 PM
Interstate 40 crosses four I-X7 interstates (planned for five with the I-57 extension).  Two of which terminate on their north end at I-40, and one terminates on it's south end at I-40.  I-X7 is the tied for third with I-X0 as the third most often repeated last digit in the system, behind X5(10) and X9(9)(just lacking CA-99 being re-signed as I-9).  Significant that it is repeated that often, yet only four cross the same transcontinental interstate.
What's the 5th? I only counted 17, 27, future 57 and 77.
I-87's "southern" terminus is at I-40.
Title: Re: Random facts about interstates and US routes
Post by: Bickendan on October 10, 2021, 12:11:13 AM
Quote from: jayhawkco on October 05, 2021, 12:54:57 PM
Quote from: I-35 on October 05, 2021, 12:43:21 PM
Quote from: jayhawkco on October 05, 2021, 10:24:07 AM
AADT Facts

Lowest (signed, not at a border) 2di: 1,700 in I-84 in Oregon just east of the I-82 intersection


This surprises me, as it suggests there is a higher amount of EB 84 traffic exiting towards 82 WB (and vice versa) - is there really more Tri Cities-PDX traffic than Boise-PDX traffic?

Yeah... I've been trying to verify it since it stood out to me also.  If only Oregon named things internally the same way they do externally.  Still looking at it.

Edit - Yeah, I'm not sure where OR Highway 2 branches off and I-84 becomes OR Highway 6, but looks like I read it wrong.  I'll update.

Chris
Transition point is US 730. ORH 2 leaves I-84/US 30 and follows US 730 to Washington.
Title: Re: Random facts about interstates and US routes
Post by: Dirt Roads on October 10, 2021, 12:12:02 AM
The completion of almost all of I-79 in West Virginia reduced the travel time from Charleston to Morgantown from over 7 hours in 1965 to just a hair over 3 hours in 1977.   Completion of I-79 to connect to I-77 in Charleston in 1979 whacked another 15 minutes off the trip.  This was all in the NMSL days, so nowadays the trek only takes about 2h25min.  The old route using US-119/WV-4, WV-4 and US-19 is roughly parallel to the current path of I-79.  No wonder the State encouraged residents to drive along the sides of uncompleted portions of I-79 to get to Morgantown on gamedays.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on October 10, 2021, 08:15:49 PM
Gonna infodump about Chicago real quick.

Interstate 294, the beloved (sarcasm) Tri-State Tollway by Chicago, is signed North and South, although the stretch of Interstate 94 it bypasses is signed East and West.

Interstate 355 was almost Interstate 455. The feds considered I-355 to be an outer beltway of Chicago with I-55 as its parent, but IDOT considered it a spur to Schaumburg. Nowadays, it wouldn't even be assigned an x55 number.

The Ohio Street exit on the north side is the way it is because it was supposed to be the exit to Interstate 494, a loop which would have run down Lake Shore Drive. It was never built due to low popularity.

Finally, the most interesting quirk

On the stretch of I-80 through Joliet, the speed limit was increased from 45 to 55 near the beginning of the 2010's. Literally no improvements were made to the road to justify the increase in speed limit, they just raised it without doing anything to the road.
Title: Re: Random facts about interstates and US routes
Post by: zachary_amaryllis on October 11, 2021, 03:55:33 AM
Quote from: Hobart on October 10, 2021, 08:15:49 PM
Gonna infodump about Chicago real quick.

Interstate 294, the beloved (sarcasm) Tri-State Tollway by Chicago, is signed North and South, although the stretch of Interstate 94 it bypasses is signed East and West.

Interstate 355 was almost Interstate 455. The feds considered I-355 to be an outer beltway of Chicago with I-55 as its parent, but IDOT considered it a spur to Schaumburg. Nowadays, it wouldn't even be assigned an x55 number.

The Ohio Street exit on the north side is the way it is because it was supposed to be the exit to Interstate 494, a loop which would have run down Lake Shore Drive. It was never built due to low popularity.

Finally, the most interesting quirk

On the stretch of I-80 through Joliet, the speed limit was increased from 45 to 55 near the beginning of the 2010's. Literally no improvements were made to the road to justify the increase in speed limit, they just raised it without doing anything to the road.

don't forget the interstate (is it 290?) that goes through a building.
Title: Re: Random facts about interstates and US routes
Post by: jbnv on October 11, 2021, 11:14:54 AM
For a while, Louisiana was one of only a handful of states that had two or more intrastate 2dis (12, 49 which is now truly an interstate).

At the moment, Texas is the king of the intrastate 2dis (2, 14, 27, 37, 45).
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on October 11, 2021, 01:55:56 PM
Quote from: Hobart on October 10, 2021, 08:15:49 PM
Interstate 294, the beloved (sarcasm) Tri-State Tollway by Chicago, is signed North and South, although the stretch of Interstate 94 it bypasses is signed East and West.

I think it might actually be sincerely beloved, at least to some extent. It did win the 3DI bracket contest not too long ago, after all.
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on October 11, 2021, 08:53:01 PM
Quote from: Dirt Roads on October 10, 2021, 12:12:02 AM
The completion of almost all of I-79 in West Virginia reduced the travel time from Charleston to Morgantown from over 7 hours in 1965 to just a hair over 3 hours in 1977.   Completion of I-79 to connect to I-77 in Charleston in 1979 whacked another 15 minutes off the trip.  This was all in the NMSL days, so nowadays the trek only takes about 2h25min.  The old route using US-119/WV-4, WV-4 and US-19 is roughly parallel to the current path of I-79.  No wonder the State encouraged residents to drive along the sides of uncompleted portions of I-79 to get to Morgantown on gamedays.

I think I read somewhere on here that taking WV 4 all the way (I-79's parallel route) was actually longer than following US 119 to Spencer and then the concurrency with US 33 to Weston to pick up US 19.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 11, 2021, 08:59:18 PM
Quote from: zachary_amaryllis on October 11, 2021, 03:55:33 AM
Quote from: Hobart on October 10, 2021, 08:15:49 PM
Gonna infodump about Chicago real quick.

Interstate 294, the beloved (sarcasm) Tri-State Tollway by Chicago, is signed North and South, although the stretch of Interstate 94 it bypasses is signed East and West.

Interstate 355 was almost Interstate 455. The feds considered I-355 to be an outer beltway of Chicago with I-55 as its parent, but IDOT considered it a spur to Schaumburg. Nowadays, it wouldn't even be assigned an x55 number.

The Ohio Street exit on the north side is the way it is because it was supposed to be the exit to Interstate 494, a loop which would have run down Lake Shore Drive. It was never built due to low popularity.

Finally, the most interesting quirk

On the stretch of I-80 through Joliet, the speed limit was increased from 45 to 55 near the beginning of the 2010's. Literally no improvements were made to the road to justify the increase in speed limit, they just raised it without doing anything to the road.

don't forget the interstate (is it 290?) that goes through a building.

The Old Post Office, it was built with the opening for a highway, back in 30's.
Title: Re: Random facts about interstates and US routes
Post by: Flint1979 on October 11, 2021, 10:17:41 PM
I-290 ends at the Circle Interchange.
Title: Re: Random facts about interstates and US routes
Post by: achilles765 on October 12, 2021, 03:47:58 AM
Quote from: jbnv on October 11, 2021, 11:14:54 AM
For a while, Louisiana was one of only a handful of states that had two or more intrastate 2dis (12, 49 which is now truly an interstate).

At the moment, Texas is the king of the intrastate 2dis (2, 14, 27, 37, 45).

I was just looking into that today: which states have the most intrastate routes, and where they are and why.  Even when I-14 becomes truly interstate, we still will be the king since I doubt any of the others will ever be extended...MAYBE I-45 or I-27 but there is nowhere for I-2 or I-37 to go.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 12, 2021, 03:53:16 PM
All 4 odd divisible by 15 4xx interstate numbers are well known, and can be linked to a specific city or two just by mentioning the interstate:

405 - LA and Seattle
435 - Kansas City
465 - Indianapolis
495 - DC and NYC
Title: Re: Random facts about interstates and US routes
Post by: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.
Milwaukee is the largest city without an either x0 or x5 interstate.
There are only 5 9xx's I-905, I-910, I-980, I-985 and I-990 and with the exception of I-10 they all have a full set or soon will be.
The lowest exit number on I-17 is 194.
Title: Re: Random facts about interstates and US routes
Post by: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61
Title: Re: Random facts about interstates and US routes
Post by: Bruce on October 12, 2021, 05:57:02 PM
Quote from: SkyPesos on October 12, 2021, 03:53:16 PM
All 4 odd divisible by 15 4xx interstate numbers are well known, and can be linked to a specific city or two just by mentioning the interstate:

405 - LA and Seattle
435 - Kansas City
465 - Indianapolis
495 - DC and NYC

Portland also has an I-405.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 12, 2021, 06:01:53 PM
Quote from: Bruce on October 12, 2021, 05:57:02 PM
Quote from: SkyPesos on October 12, 2021, 03:53:16 PM
All 4 odd divisible by 15 4xx interstate numbers are well known, and can be linked to a specific city or two just by mentioning the interstate:

405 - LA and Seattle
435 - Kansas City
465 - Indianapolis
495 - DC and NYC

Portland also has an I-405.
It's not as noteworthy as I-205 in the area, or LA and Seattle's 405. Just like how I didn't include Boston's or Wilmington DE's 495. Very few people would think of Portland over LA or Seattle when I-405 is mentioned.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 12, 2021, 06:06:58 PM
Quote from: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61

The equivalent for US x0's appears to be Illinois - US 20, 30, 40, 50, and 60.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 12, 2021, 06:10:01 PM
Quote from: US 89 on October 12, 2021, 06:06:58 PM
Quote from: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61

The equivalent for US x0's appears to be Illinois - US 20, 30, 40, 50, and 60.
Ohio seems to be the winner for x2s: US 22, 42, 52, 62.
and 2x: US 20, 21 (formerly), 22, 23, 24, 25 (formerly), 27.
Title: Re: Random facts about interstates and US routes
Post by: TheHighwayMan3561 on October 12, 2021, 06:45:21 PM
Wisconsin was the winner in 1X, with 10, 12, 14, 16, 18.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 12, 2021, 06:54:00 PM
Quote from: TheHighwayMan394 on October 12, 2021, 06:45:21 PM
Wisconsin was the winner in 1X, with 10, 12, 14, 16, 18.
Seems like Virginia have the same number of 1x, except theirs are all odd: 11, 13, 15, 17, 19.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on October 13, 2021, 12:37:30 AM
Quote from: US 89 on October 12, 2021, 06:06:58 PM
Quote from: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61

The equivalent for US x0's appears to be Illinois - US 20, 30, 40, 50, and 60.

I feel like Illinois is kind of pushing it though, considering US 60 literally enters the state for 1,000 feet in Cairo, makes a hard left, and exits again.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 13, 2021, 02:04:57 AM
Quote from: Hobart on October 13, 2021, 12:37:30 AM
Quote from: US 89 on October 12, 2021, 06:06:58 PM
Quote from: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61

The equivalent for US x0's appears to be Illinois - US 20, 30, 40, 50, and 60.

I feel like Illinois is kind of pushing it though, considering US 60 literally enters the state for 1,000 feet in Cairo, makes a hard left, and exits again.

Meh. 60 enters IL. Doesn't matter how long it spends there.

As for interstates, I don't think anything beats Texas and its four I-x0 routes (10, 20, 30, 40).
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on October 13, 2021, 11:24:19 AM
Is West Virginia the smallest state to have four x0's (30, 40, 50, and 60)?

Interesting how the first three are bunched together, then there's a bit of a gap between 50 and 60, and much of the state lies south of 60.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 13, 2021, 11:45:07 AM
Quote from: hbelkins on October 13, 2021, 11:24:19 AM
Is West Virginia the smallest state to have four x0's (30, 40, 50, and 60)?

Interesting how the first three are bunched together, then there's a bit of a gap between 50 and 60, and much of the state lies south of 60.
I find the gaps between the x1 US routes interesting too. Going along I-80, there's roughly 130 miles between US 1 and US 11, 290 miles between US 11 and I-77 (former US 21), and 250 miles between US 21 and US 31. The next three are much more closely spaced compared to the previous three, with 65 miles between US 31 and US 41, 85 miles between US 41 and US 51, and 90 miles between US 51 and US 61. In my frequent trips between Cincinnati and St Louis, I thought it was sort of crazy that I can get all the way from 27 to 61 in just a 5 1/2 hour drive, a difference of 34, or 17 potential odd 2dus in between. There's also a bunch of unused or wasted US route numbers between 31 and 61, like 37, 39, 47, 55 and 57 (though I think 421 and 231 are long enough to be US 37 and 39 respectively, but that's fictional).
Title: Re: Random facts about interstates and US routes
Post by: kurumi on October 13, 2021, 12:16:18 PM
Widest spreads in N/S or E/W primary interstate routes in one state:

E/W:
California: 80 - 8 == 72
Illinois: 94 - 24 == 70

N/S:
Texas: 69 - 27 == 42
Missouri: 57 - 29 == 28
Tennessee: 81 - 55 == 26

I might have missed some.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 13, 2021, 12:26:33 PM
Quote from: kurumi on October 13, 2021, 12:16:18 PM
Widest spreads in N/S or E/W primary interstate routes in one state:

E/W:
California: 80 - 8 == 72
Illinois: 94 - 24 == 70

N/S:
Texas: 69 - 27 == 42
Missouri: 57 - 29 == 28
Tennessee: 81 - 55 == 26

I might have missed some.
For US routes:

E-W:
1. Colorado (84-6=78)
2. California (80-6=74)
3. Ohio (68-6=62)

N-S:
Louisiana and Tennessee (79-11=68)

Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 13, 2021, 01:48:21 PM
I always found it odd that I-35 in Texas replaced US-81.  35 (and 45 being close to it) is a number that's closer to the middle of the grid, which Texas is close to the center, but 81 seems way too far to the west.  I found it odd that in Texas, the grid is already shifted to 81.  Yes, the country is more sparsely populated heading west from US-81, so the grid can get more spaced out in the graduations, but I always felt it was too far shifted.   

Yes the US Highway grid is was very very flawed, while the Interstate grid seemed to try to correct the errors made in the US grid, but the American southwest is one of the areas where the grid seemed to work, but the numbers seemed unnecessarily cramped (and by that I mean the north-south grid starts to run out of numbers even as far east as east Texas). 

I also found it odd that US-87 was in central Texas, yet the next odd number up, US-89 goes east of the Grand Canyon and goes through Utah.   

On another note, Texas is the proud owner of two horrible intrastate grid violators; US-57 and US-96.  Now, while US-57 is basically a continuation of Federal Route 57, US-96 is a mystery as to why it was numbered that way.  The only thing it has going for it is at one point it is south of US-90, but I for the life of me have no idea why it was numbered even although it's a north-south route.  This isn't a fact, since I did no research on it, but are there any other states that have 2 or more US routes that are this level horrible grid violators?  Intrastate would be preferable, but they don't have to be.   
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 13, 2021, 02:00:20 PM
Quote from: ethanhopkin14 on October 13, 2021, 01:48:21 PM
On another note, Texas is the proud owner of two horrible intrastate grid violators; US-57 and US-96.  Now, while US-57 is basically a continuation of Federal Route 57, US-96 is a mystery as to why it was numbered that way.  The only thing it has going for it is at one point it is south of US-90, but I for the life of me have no idea why it was numbered even although it's a north-south route.  This isn't a fact, since I did no research on it, but are there any other states that have 2 or more US routes that are this level horrible grid violators?  Intrastate would be preferable, but they don't have to be.
I know it's not intrastate, but it's worth nothing that US 59 is out of place in the grid, as it's entirely west of US 71. I think I saw in Fictional once to renumber it to US 73, which would make more sense as it's between 71 and 75 most of the way.

With the interstate grid "fixing" the US routes grid, there's one exception I can think of: Wisconsin. All 3 of its N-S interstates (39, 41 and 43) are east of the general line I-55 goes most of its way between New Orleans and St Louis. This happened because IDOT didn't want to extend 55, 57 or 65 to the Wisconsin line from Chicago, so Wisconsin had to find new numbers to use.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 13, 2021, 02:33:00 PM
Quote from: SkyPesos on October 13, 2021, 02:00:20 PM
Quote from: ethanhopkin14 on October 13, 2021, 01:48:21 PM
On another note, Texas is the proud owner of two horrible intrastate grid violators; US-57 and US-96.  Now, while US-57 is basically a continuation of Federal Route 57, US-96 is a mystery as to why it was numbered that way.  The only thing it has going for it is at one point it is south of US-90, but I for the life of me have no idea why it was numbered even although it's a north-south route.  This isn't a fact, since I did no research on it, but are there any other states that have 2 or more US routes that are this level horrible grid violators?  Intrastate would be preferable, but they don't have to be.
I know it's not intrastate, but it's worth nothing that US 59 is out of place in the grid, as it's entirely west of US 71. I think I saw in Fictional once to renumber it to US 73, which would make more sense as it's between 71 and 75 most of the way.

With the interstate grid "fixing" the US routes grid, there's one exception I can think of: Wisconsin. All 3 of its N-S interstates (39, 41 and 43) are east of the general line I-55 goes most of its way between New Orleans and St Louis. This happened because IDOT didn't want to extend 55, 57 or 65 to the Wisconsin line from Chicago, so Wisconsin had to find new numbers to use.

I don't count that.  I look at intermediate interstate this way: If an I-X0 or I-X5 has ended, you treat it like it doesn't exist.  Example, I-210 north of San Bernardino, CA could be numbered I-78 if it were a 2di because by that time in the grid, the only two remaining I-X0 interstates left are I-10 and I-80.  I-40 had just ended, so that frees up all numbers between 10 and 80.  I don't get into that, because if you draw that line in the sand, then I-8, which is 100% in the correct place in the grid being south of I-10 is on a latitude line that if it were transplanted to the east coast at the same point north and south, all of the route would be north of I-10 and most or some of it would be north of I-16 and I-26.

A route only needs to comply to the rules at that given space in the country. Since I-55 is dead (and I-45 and I-65 for that fact) at that point, the Wisconsin interstates can be numbered anywhere between I-35 and I-75 in order to comply. 

The grid isn't perfectly straight lines; they fluctuate. 
Title: Re: Random facts about interstates and US routes
Post by: clong on October 13, 2021, 02:33:21 PM
Quote from: kurumi on October 13, 2021, 12:16:18 PM
Widest spreads in N/S or E/W primary interstate routes in one state:

E/W:
California: 80 - 8 == 72
Illinois: 94 - 24 == 70

N/S:
Texas: 69 - 27 == 42
Missouri: 57 - 29 == 28
Tennessee: 81 - 55 == 26

I might have missed some.

N/S
Alabama: 85 - 59 == 26
Title: Re: Random facts about interstates and US routes
Post by: GaryV on October 13, 2021, 03:00:30 PM
Quote from: ethanhopkin14 on October 13, 2021, 01:48:21 PM
I always found it odd that I-35 in Texas replaced US-81.  35 (and 45 being close to it) is a number that's closer to the middle of the grid, which Texas is close to the center, but 81 seems way too far to the west.  I found it odd that in Texas, the grid is already shifted to 81.  Yes, the country is more sparsely populated heading west from US-81, so the grid can get more spaced out in the graduations, but I always felt it was too far shifted.   
Not in 1926 it wasn't.  Look for the 1924 presidential election results.  There were only 113 Electoral College votes from the Great Plains to the Pacific.  The population was skewed greatly to the east of Texas.
Title: Re: Random facts about interstates and US routes
Post by: dlsterner on October 13, 2021, 10:14:58 PM
Quote from: clong on October 13, 2021, 02:33:21 PM
Quote from: kurumi on October 13, 2021, 12:16:18 PM
Widest spreads in N/S or E/W primary interstate routes in one state:

E/W:
California: 80 - 8 == 72
Illinois: 94 - 24 == 70

N/S:
Texas: 69 - 27 == 42
Missouri: 57 - 29 == 28
Tennessee: 81 - 55 == 26

I might have missed some.

N/S
Alabama: 85 - 59 == 26

N/S
Georgia: 95 - 59 == 36
Title: Re: Random facts about interstates and US routes
Post by: Dirt Roads on October 13, 2021, 11:31:04 PM
Quote from: dlsterner on October 13, 2021, 10:14:58 PM
N/S
Georgia: 95 - 59 == 36

Can of worms alert!
N/S
Georgia: 475 - 59 = 416
E/W
West Virginia:  470 - 64 = 406

Not sure if there are any other 3dis that serve as "primary" interstates.  I wouldn't count the I-495 Capital Beltway, but I might consider the I-495 VVMH in Wilmington, Delaware.  Is the route to Philly more primary than the route to NJTP?  :hmmm:
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 13, 2021, 11:33:39 PM
Quote from: Dirt Roads on October 13, 2021, 11:31:04 PM
Quote from: dlsterner on October 13, 2021, 10:14:58 PM
N/S
Georgia: 95 - 59 == 36

Can of worms alert!
N/S
Georgia: 475 - 59 = 416
E/W
West Virginia:  470 - 64 = 406

Not sure if there are any other 3dis that serve as "primary" interstates.  I wouldn't count the I-495 Capital Beltway, but I might consider the I-495 VVMH in Wilmington, Delaware.  Is the route to Philly more primary than the route to NJTP?  :hmmm:
I-270 in Missouri/Illinois? Even though it's part of a beltway for St Louis, it's shorter than I-70 for through traffic getting through the St Louis area, as I-70 dips to the south, and comes back north. I-70 even continues I-270's mileposts in IL east of its eastern terminus.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 14, 2021, 02:00:52 AM
Quote from: US 89 on October 12, 2021, 06:06:58 PM
Quote from: Mapmikey on October 12, 2021, 05:39:46 PM
Quote from: jbnv on October 12, 2021, 05:29:46 PM
Quote from: dvferyance on October 12, 2021, 05:27:17 PM
Tennessee and Georgia are the only 2 states with 3 x5's interstates.
I-55,65 and 75 in Tennessee.
I-75,85 and 95 in Georgia.

Louisiana has four US x1:s 11, 51, 61 and 71.

Tennessee has five:  11, 31, 41, 51 and 61

The equivalent for US x0's appears to be Illinois - US 20, 30, 40, 50, and 60.
Initially, most of US 12 in WI, IL and MI was originally planned to be part of US 10. Combine that with a much longer US 60 in the state (on what is now US 66), Illinois would have 6 x0 US routes in the state in one of the first drafts of the US routes system: 10, 20, 30, 40, 50 and 60.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 14, 2021, 10:34:01 AM
Quote from: SkyPesos on October 13, 2021, 02:00:20 PM
I know it's not intrastate, but it's worth nothing that US 59 is out of place in the grid, as it's entirely west of US 71. I think I saw in Fictional once to renumber it to US 73, which would make more sense as it's between 71 and 75 most of the way.

The only reason I mentioned US-57 and US-96 being intrastate is because it makes their "out of grid-ness" that much more bizarre.  At least US-66 in the west was kinda almost south of US-60, but when it got closer and closer to Chicago, well yeah.

Same with US-54.  It starts in Illinois and Missouri south of US-50 and north of US-60, but by the time it gets into New Mexico and Texas for the second time, it is way out of grid.  The intrastate ones are even more bizarre. 

But yes, US-59 is entirely out of grid.  I have never understood it's numbering.  Same with US-6.  It is never in grid, and in the west it is laughably out of grid. 
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 14, 2021, 10:52:14 AM
Some US highways were built diagonally. That's how they are,  :wave:
Title: Re: Random facts about interstates and US routes
Post by: NWI_Irish96 on October 14, 2021, 10:58:46 AM
Quote from: US20IL64 on October 14, 2021, 10:52:14 AM
Some US highways were built diagonally. That's how they are,  :wave:

I'm not in favor of wholesale changes now, but when they originally numbered these roads, they could have reserved 1xx numbers for diagonal routes and let "child" routes use 2xx and up.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on October 14, 2021, 01:54:50 PM
Quote from: ethanhopkin14 on October 13, 2021, 01:48:21 PM
I also found it odd that US-87 was in central Texas, yet the next odd number up, US-89 goes east of the Grand Canyon and goes through Utah.   

That whole bit of US 87 in Texas wasn't originally part of the route. For the first 10 years of its existence, the south end was in Rawlins and the whole route was much more grid-appropriate. Back then, US 89 did not extend north of Spanish Fork and US 91 actually ended at US 87 in Great Falls.

I sometimes wonder if, had all roads designated as US highways today existed back then, if US 87 would have been assigned to today's US 191 through Arizona/Utah/Wyoming. That would have put it about halfway between US 85 and US 89 for the majority of its route.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 14, 2021, 05:05:15 PM
Quote from: US 89 on October 14, 2021, 01:54:50 PM
I sometimes wonder if, had all roads designated as US highways today existed back then, if US 87 would have been assigned to today's US 191 through Arizona/Utah/Wyoming. That would have put it about halfway between US 85 and US 89 for the majority of its route.
That was one of my numbering experiments that I did a while ago in fictional. Since the population of the west is significantly larger than back in 1926 (wow can't believe the US routes system is almost 100 years old!), I pushed some numbers west, starting from around the 50s range for odd numbers. Like I placed 51 on current 61, 61 on current 59/71, 71 on current 83, 81 on current 85/87, and 91 on current 93/95. This omitted the need for 101 on the west coast, and spread the numbers out a bit more in the central US.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on October 14, 2021, 10:13:37 PM
Quote from: ethanhopkin14 on October 13, 2021, 01:48:21 PM
I always found it odd that I-35 in Texas replaced US-81.  35 (and 45 being close to it) is a number that's closer to the middle of the grid, which Texas is close to the center, but 81 seems way too far to the west.  I found it odd that in Texas, the grid is already shifted to 81.  Yes, the country is more sparsely populated heading west from US-81, so the grid can get more spaced out in the graduations, but I always felt it was too far shifted.   

Yes the US Highway grid is was very very flawed, while the Interstate grid seemed to try to correct the errors made in the US grid, but the American southwest is one of the areas where the grid seemed to work, but the numbers seemed unnecessarily cramped (and by that I mean the north-south grid starts to run out of numbers even as far east as east Texas). 

I also found it odd that US-87 was in central Texas, yet the next odd number up, US-89 goes east of the Grand Canyon and goes through Utah.   

On another note, Texas is the proud owner of two horrible intrastate grid violators; US-57 and US-96.  Now, while US-57 is basically a continuation of Federal Route 57, US-96 is a mystery as to why it was numbered that way.  The only thing it has going for it is at one point it is south of US-90, but I for the life of me have no idea why it was numbered even although it's a north-south route.  This isn't a fact, since I did no research on it, but are there any other states that have 2 or more US routes that are this level horrible grid violators?  Intrastate would be preferable, but they don't have to be.   

US 87 didn't exist south of Wyoming until 1934.

US 96 is the product of a simple route swap with US 59.

The routing of US 59 being west of US 71 everywhere is a product of all the odd numbers already in use from 61-77.  I guess they could've gone with 79 but then it would be east of 75 and 77 its whole length.  There were also efforts to incorporate 73 into some of the southrn part of 59 but that didn't pan out.
Title: Re: Random facts about interstates and US routes
Post by: achilles765 on October 15, 2021, 01:35:24 AM
It seems to me like there is a kind of unofficial pattern to some of the routes based on the ending digit...
other than the usual x0 and x5 being major coast to coast/border-to-border routes

X1 routes seem to be long-is diagonal North-South routes that connect regions (future I-11, I-71, I-81, I-91)
x2 seem to be shorter east-west routes that connect one or two cities and are either intrastate or barely enter a second state (I-2, I-12 are both intrastate, I-22 is probably the one that is in another state the longest, future I-42, I-72 which barely enters Missouri, I-82)
Haven't noticed anything special about x3
x4 seem to be longish diagonal east-west routes that are almost like secondary major east west routes (I-4 being the only shorter one, but future I-14, I-24, I-44, I-64, I-74, both I-84s, I-94)
x6- shorter regional east-west routes that are intrastate or very nearly. (I-16, I-26, I-66, I-76, I-86, I-96)
x7- short north-south routes.  almost all are intrastate with the exception of I-57 and I-77. Usually connect two cities in a state, with one being a city that is not otherwise connected to any other major route (I-17 connecting Phoenix and Flagstaff, I-27 connecting Lubbock and Amarillo, I-37 connecting San Antonio and Corpus Christi, I-57, while longer basically connects Memphis and Chicago, I-77 is the exception, I-87, and I-97)
x8 are the most uncommonly used route numbers.  There are currently only four: I-8, I-68, I-78, and I-88.  These seem like short one or two state east-west routes but I notice no other noticeable traits.
x9 seem to be the secondary major north-south routes, with the exception of I-19 and I-99.. (I-19, I-29 from KC to Canada, I-39 doesn't fit totally, I-49, I-59, definitely I-69 once complete, I-79, I-89)

Just some things I noticed.  Now, I have expanded on this and begun to make a new grid system for 2dis based on this, which I may post in fictional once I complete it.
Title: Re: Random facts about interstates and US routes
Post by: dvferyance on October 20, 2021, 12:06:29 AM
I-59 is 445 miles long yet it's northernmost miles are in Georgia still in the deep south.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on October 20, 2021, 11:00:17 PM
This is about a former US route but whatever.

So US-30A used to run along the route of Illinois 38. I heard the number of Illinois 38 was selected because it sounds like "30 - A".
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on October 22, 2021, 12:35:21 AM
Highest difference between two same direction interstates intersecting

E-W: I-40 and I-74 (34)
N-S: I-35 and I-69(W) (34)
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 22, 2021, 12:21:49 PM
Quote from: SkyPesos on October 22, 2021, 12:35:21 AM
Highest difference between two same direction interstates intersecting

E-W: I-40 and I-74 (34)
N-S: I-35 and I-69(W) (34)

Incorrect:

(https://www.aaroads.com/shields/img/TX/TX19880901i1.jpg)

:bigass:
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on October 22, 2021, 12:37:18 PM
Quote from: Hobart on October 20, 2021, 11:00:17 PM
This is about a former US route but whatever.

So US-30A used to run along the route of Illinois 38. I heard the number of Illinois 38 was selected because it sounds like "30 - A".

Before 1971, route was known as ALT 30. The US shield numbered 30 and "ALT" above it. Going further back, was called US-330.
Title: Re: Random facts about interstates and US routes
Post by: Evan_Th on October 22, 2021, 01:54:09 PM
OK, @ethanhopkin14, where is that photo showing, and what's it supposed to be?  I'm guessing US 90?
Title: Re: Random facts about interstates and US routes
Post by: TheHighwayMan3561 on October 22, 2021, 03:41:11 PM
Quote from: Evan_Th on October 22, 2021, 01:54:09 PM
OK, @ethanhopkin14, where is that photo showing, and what's it supposed to be?  I'm guessing US 90?

I assume Texas, given the pitchfork posts.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 22, 2021, 04:17:11 PM
Quote from: TheHighwayMan394 on October 22, 2021, 03:41:11 PM
Quote from: Evan_Th on October 22, 2021, 01:54:09 PM
OK, @ethanhopkin14, where is that photo showing, and what's it supposed to be?  I'm guessing US 90?

I assume Texas, given the pitchfork posts.

Correct, it's Texas and supposed to be U.S. 90. Also dead giveaway it's Texas, and that it's a rather older picture, by the night speed limit.
Title: Re: Random facts about interstates and US routes
Post by: Scott5114 on October 22, 2021, 06:01:14 PM
In 1958, California had no less than four US route shield designs for use on freeway guide signs: 1 digit, 2 digit, 3 digit where one digit is "1", and 3 digit. The one-digit shield, of course, was only ever used on US-6!
Title: Re: Random facts about interstates and US routes
Post by: Bickendan on October 23, 2021, 04:26:26 AM
Quote from: ethanhopkin14 on October 22, 2021, 12:21:49 PM
Quote from: SkyPesos on October 22, 2021, 12:35:21 AM
Highest difference between two same direction interstates intersecting

E-W: I-40 and I-74 (34)
N-S: I-35 and I-69(W) (34)

Incorrect:

(https://www.aaroads.com/shields/img/TX/TX19880901i1.jpg)

:bigass:
And together they make I-100!
Title: Re: Random facts about interstates and US routes
Post by: GaryA on October 23, 2021, 05:52:34 PM
Quote from: Scott5114 on October 22, 2021, 06:01:14 PM
In 1958, California had no less than four US route shield designs for use on freeway guide signs: 1 digit, 2 digit, 3 digit where one digit is "1", and 3 digit. The one-digit shield, of course, was only ever used on US-6!

Surprised they didn't have one more, for 3 digit where two digits are "1" (101).
Title: Re: Random facts about interstates and US routes
Post by: bandit957 on October 23, 2021, 06:42:43 PM
In the late '80s, I observed that Cincinnati was tied with several other cities for having the most U.S. routes within its city limits. I don't remember what the others were, but Lexington and Memphis may have been among them. However, I think Chicago once had more.
Title: Re: Random facts about interstates and US routes
Post by: bandit957 on October 23, 2021, 06:43:31 PM
Quote from: bandit957 on October 23, 2021, 06:42:43 PM
In the late '80s, I observed that Cincinnati was tied with several other cities for having the most U.S. routes within its city limits. I don't remember what the others were, but Lexington and Memphis may have been among them. However, I think Chicago once had more.

Also, for Cincinnati, I did count US 25 even though by that time it had been truncated at the state line.
Title: Re: Random facts about interstates and US routes
Post by: bandit957 on October 23, 2021, 06:50:10 PM
Quote from: hbelkins on October 06, 2021, 12:30:36 PM
I would also say there are gaps in I-74, between the unfinished portions in North Carolina, but would not consider the section between Cincinnati and the NC/VA line to be a gap because there will never be an interstate between those two points. There's also a gap in I-26 between Asheville and Mars Hill, even though there's a freeway running between those two points.

The gap in I-74 can really be filled in with existing Interstates as it is. It wouldn't be perfectly straight, but it wouldn't be completely idiotic either.
Title: Re: Random facts about interstates and US routes
Post by: bwana39 on October 23, 2021, 08:17:23 PM
Quote from: ethanhopkin14 on October 05, 2021, 02:31:02 PM
Quote from: SkyPesos on October 04, 2021, 10:16:49 PM
Post whatever random facts about interstates or US routes you have that you find interesting here. They can be as obvious, or as obscure as you like. I had plenty of facts over the past few weeks, but forgot about what all of them are about. Here's two I thought of in the shower today:

Of the x0 interstates (excluding wannabe I-30), I-10 interchanges with the most x5 interstates, while I-70 interchanges with the least. And none of them meet all 10 of them.
90: 5, 15, 25, 35, 55, 65, 75, 95 (8)
80: 5, 15, 25, 35, 55, 65, 75, 95 (8)
70: 15, 25, 35, 55, 65, 75 (6)
40: 15, 25, 35, 55, 65, 75, 85, 95 (8)
20: 35, 45, 55, 65, 75, 85, 95 (7)
10: 5, 15, 25, 35, 45, 55, 65, 75, 95 (9)

Speaking of I-70, it's the only x0 without a 5xx 3di, a common odd first digit for 3dis for some reason, and sometimes, the only odd first digit 3di an interstate has (516, 520, 530, 579, etc). Also, I-40 doesn't have a 3xx 3di, another common first digit.

Interesting.

I have always thought about how the I-35/I-10 interchanges in San Antonio are the most "connected" interchanges in the system (fitting since they share an alignment too).  Since the aforementioned I-10 intersects with the most I-X5s and I-35 is the only I-X5 to intersect with all I-X0 interstates (I am not going to fight about how I-35 is actually 3 separate interstates and that it doesn't intersect with I-20 or I-30 since they actually intersect I-35E and I-35W from east to west respectively).  Basically the only one missing is I-85, but a short jaunt up I-65 from Mobile gets you to I-85 so it can be easily forgiven.

Separately, I-30 and I-85 are cousins, as they are the only interstates to default on both ends onto another "like" interstate (I-85 from I-65 to I-95 and I-30 from I-20 to I-40), making their short or relatively short life being part of a much larger route. 

On that note, I am not in the boat of the I-30 and I-45 bashing.  I-30 is an important connection from Dallas to Chicago or New York, while I-45 is basically I-35EE, part of that important corridor.  Yes they are both short, but very important.

The folks in Arkansas wanted to continue I-30 along US-67 to the Missouri state line, but AASHTO declined the application at the strong urging of the Illinois and Missouri contingents.  Some would argue that I-22 should have become I-30. Others would propose that US-287 should eventually become I-30. I-30 probably exists because of US House Speaker Sam Rayburn from north Texas and Senate majority leader Lyndon Johnson.  coupled with Arkansas' powerful senators McClellan and Fulbright.

US 67 was always a major thoroughfare. It might also mention that Texas size probably called for 4 X-0's
Title: Re: Random facts about interstates and US routes
Post by: Crown Victoria on October 24, 2021, 11:39:51 PM
A picture of the western portal of the Pennsylvania Turnpike's Kittatinny Mountain Tunnel is featured as the first postcard during the opening credits of National Lampoon's Vacation.

The image is from before the tunnel was twinned, and before designation as I-76, but still an interesting random fact.
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on October 25, 2021, 02:44:32 AM
Quote from: Crown Victoria on October 24, 2021, 11:39:51 PM
A picture of the western portal of the Pennsylvania Turnpike's Kittatinny Mountain Tunnel is featured as the first postcard during the opening credits of National Lampoon's Vacation.

The image is from before the tunnel was twinned, and before designation as I-76, but still an interesting random fact.

Not that anyone asked, but here (http://secretfunspot.blogspot.com/2010/08/51-postcards-from-opening-titles-of.html) are all of the postcards from that title sequence.
Title: Re: Random facts about interstates and US routes
Post by: Flint1979 on October 26, 2021, 08:38:16 PM
I'm surprised to see Big Boy in that picture. Talk about a chain that has gone downhill it's horrible now days. Used to be a good restaurant but not anymore.
Title: Re: Random facts about interstates and US routes
Post by: achilles765 on October 27, 2021, 01:00:27 AM
Texas has both the most intrastate Interstate and intrastate US Routes. It also has the most suffixed routes:
Interstates:
I-2, I-14 (for now), I-27, I-37, I-45

Suffixed:
I-35E, I-35W, I-69E, I-69C, I-69W

US Highways:
Us 57, US 96, US 175, US 181, US 290
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on October 27, 2021, 07:51:06 AM
Quote from: achilles765 on October 27, 2021, 01:00:27 AM
Texas has both the most intrastate Interstate and intrastate US Routes. It also has the most suffixed routes:
Interstates:
I-2, I-14 (for now), I-27, I-37, I-45

Suffixed:
I-35E, I-35W, I-69E, I-69C, I-69W

US Highways:
Us 57, US 96, US 175, US 181, US 290

But does it have the most alternate US routes?

US 90A and US 77A.  I am basing this on nothing so I don't know. 
Title: Re: Random facts about interstates and US routes
Post by: Dirt Roads on October 27, 2021, 09:41:15 AM
Quote from: achilles765 on October 27, 2021, 01:00:27 AM
Texas has both the most intrastate Interstate and intrastate US Routes. It also has the most suffixed routes:
Interstates:
I-2, I-14 (for now), I-27, I-37, I-45

Suffixed:
I-35E, I-35W, I-69E, I-69C, I-69W

US Highways:
Us 57, US 96, US 175, US 181, US 290

Quote from: ethanhopkin14 on October 27, 2021, 07:51:06 AM
But does it have the most alternate US routes?

US 90A and US 77A.  I am basing this on nothing so I don't know.

North Carolina still has a bunch of "A-suffixed" routes:

US-1A (Franklinton)
US-1A (Wake Forest/Rolesville)
US-23A (Faust)
US-25A (Arden -to- Asheville)
US-64A (south of Bunn -to- Nashville)
US-64A (Rocky Mount -to- Williamston)
US-70A (Pine Level)
US-74A (Bat Cave -to- Asheville)
US-74A (Maxton -to- west of Lumberton)
US-117A (Dudley -to- Mount Olive)
US-220A (Ulah -to- Seagrove)
US-221A (Rutherfordton -to- Chesnee SC) (Bonus!  Important enough to multiplex with four-lane US-74 between Rutherfordton and Forest City)
US-264A (east of Zebulon -to- Greenville)
US-321A (Lenoir)

There are many others in North Carolina that have been downgraded (and some of these may have already been as well).  Also, it looks like we will lose some sections once I-587 and I-87 get posted along the respective stretches of US-264/US-264A and US-64/US-64A.

Also, there is the infamous "Highway 70A" signed on street blades east of Hillsborough, and posted as US-70 Business.  Like so many of North Carolina's "A-routes", this is a "flipped route". The Hillsboro bypass was completed in 1942 and originally posted as US-70A and the downtown route remained as US-70.  Then the routes were flipped in 1947.  By late 1959, US-70A through downtown Hillsborough was reposted as US-70 Business.  Folks continued to refer to the section east of "new" NC-86 as "Highway 70A", and the post office continued to use that moniker for addresses east of town.  In the 1990s, street blades went up still saying "Highway 70A" in accordance with the official postal service addresses.  I noticed that US-321A is also a flipped route.
Title: Re: Random facts about interstates and US routes
Post by: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper. I believe this is the only state where all of its interstates go through the limits of one city?
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on November 03, 2021, 04:46:39 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper. I believe this is the only state where all of its interstates go through the limits of one city?

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

North Dakota has all signed interstates at least going through one city (Fargo).

Chris
Title: Re: Random facts about interstates and US routes
Post by: jlam on November 03, 2021, 04:53:20 PM
Honorable mentions go to Sioux Falls and Omaha, but I-190 and both I-76 and I-129 exist respectively.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on November 03, 2021, 04:55:56 PM
Quote from: jlam on November 03, 2021, 04:53:20 PM
Honorable mentions go to Sioux Falls and Omaha, but I-190 and both I-76 and I-129 exist respectively.

And Providence and Wilmington, DE are both even closer.  Both I-295s are less than 5 miles away.

Chris
Title: Re: Random facts about interstates and US routes
Post by: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on November 03, 2021, 05:46:19 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper. I believe this is the only state where all of its interstates go through the limits of one city?
I find it interesting that even if I-470 is an interstate in the Denver area, it will still go through the city limits even though it's pretty far from most of the city, because of Pena Blvd and the weird city limit borders including the airport.
Title: Re: Random facts about interstates and US routes
Post by: Rothman on November 03, 2021, 05:47:27 PM
Quote from: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
What?
Title: Re: Random facts about interstates and US routes
Post by: jlam on November 03, 2021, 05:50:32 PM
Quote from: Rothman on November 03, 2021, 05:47:27 PM
Quote from: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
What?
Apparently, Honolulu and Honolulu county are a consolidated city-county government. They don't have the same boundaries, though.
Title: Re: Random facts about interstates and US routes
Post by: Rothman on November 03, 2021, 05:51:28 PM
Quote from: jlam on November 03, 2021, 05:50:32 PM
Quote from: Rothman on November 03, 2021, 05:47:27 PM
Quote from: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
What?
Apparently, Honolulu and Honolulu county are a consolidated city-county government. They don't have the same boundaries, though.
Your statements appear contradictory.
Title: Re: Random facts about interstates and US routes
Post by: formulanone on November 03, 2021, 07:00:35 PM
US 441 runs for exactly 441.20 miles in Florida.
Title: Re: Random facts about interstates and US routes
Post by: kenarmy on November 03, 2021, 10:07:56 PM
US 166 is 166 miles long.
US 195 is 95 miles long.
Close enough but US 319 is 318 miles.
The biggest range for a numbered US route intersections is 729 (US 30). Pls idk how to word that.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on November 04, 2021, 04:10:06 PM
Quote from: Rothman on November 03, 2021, 05:51:28 PM
Quote from: jlam on November 03, 2021, 05:50:32 PM
Quote from: Rothman on November 03, 2021, 05:47:27 PM
Quote from: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
What?
Apparently, Honolulu and Honolulu county are a consolidated city-county government. They don't have the same boundaries, though.
Your statements appear contradictory.

There is the official 'Honolulu City & County', all of Oahu island, and the "census county division" which is the unincorporated urbanized area on south shore.
Title: Re: Random facts about interstates and US routes
Post by: Rothman on November 05, 2021, 07:04:44 AM


Quote from: US20IL64 on November 04, 2021, 04:10:06 PM
Quote from: Rothman on November 03, 2021, 05:51:28 PM
Quote from: jlam on November 03, 2021, 05:50:32 PM
Quote from: Rothman on November 03, 2021, 05:47:27 PM
Quote from: jlam on November 03, 2021, 05:02:00 PM
Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.
What?
Apparently, Honolulu and Honolulu county are a consolidated city-county government. They don't have the same boundaries, though.
Your statements appear contradictory.

There is the official 'Honolulu City & County', all of Oahu island, and the "census county division" which is the unincorporated urbanized area on south shore.

No one considers the likes of Laie as a neighborhood of Honolulu.

I understand the government structure, but saying every town and other city on Oahu is just part of the City of Honolulu just comes off as erroneous.  It just looks like communties have given up local governments for representation on a county board.

Makes me think of hamlets and other named places in NY that are governed by their surrounding town or city, but even then, the communities on Oahu are more distinctive.
Title: Re: Random facts about interstates and US routes
Post by: zachary_amaryllis on November 05, 2021, 09:59:34 AM
Quote from: jayhawkco on November 03, 2021, 04:46:39 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper. I believe this is the only state where all of its interstates go through the limits of one city?

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

North Dakota has all signed interstates at least going through one city (Fargo).

Chris

i would have thought denver had more i-70 mileage myself than that... but upon further reflection, what i'm thinking is denver city limits is i think actually commerce city, isn't it. (just to the east of i-25, heading east)
Title: Re: Random facts about interstates and US routes
Post by: usends on November 05, 2021, 12:08:44 PM
This thread has morphed into "Random misinformation about highways". 
Title: Re: Random facts about interstates and US routes
Post by: mukade on November 05, 2021, 09:46:56 PM
Gary, Indiana is the smallest city with four 2 digit Interstate routes that enter its city limits. I can only count a handful of cities of any size with this many:









Chicago | 2,746,388 | I-55, I-57, I-90, I-94
Dallas | 1,304,379 | I-20, I-30, I-35E, I-45
Indianapolis |
887,642
| I-65, I-69, I-70, I-74
Kansas City |
508,090
| I-29, I-35, I-49, I-70
St. Louis |
301,578
| I-44, I-55, I-64, I-70
Birmingham |
200,733
| I-20, I-22, I-59, I-65
Gary |
69,093
| I-65, I-80, I-90, I-94
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on November 05, 2021, 10:33:34 PM
Quote from: jayhawkco on November 03, 2021, 04:46:39 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.

(https://i.imgur.com/9FIm2Mn.png)

I know city limits can be iffy on Google Maps, but this seems pretty solid.

The official neighborhood map of the city seems to bear this out as well:

(https://i.imgur.com/gvxnj3x.png)
Title: Re: Random facts about interstates and US routes
Post by: jlam on November 06, 2021, 10:40:32 AM
Quote from: CtrlAltDel on November 05, 2021, 10:33:34 PM
Quote from: jayhawkco on November 03, 2021, 04:46:39 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.

(https://i.imgur.com/9FIm2Mn.png)

I know city limits can be iffy on Google Maps, but this seems pretty solid.

The official neighborhood map of the city seems to bear this out as well:

(https://i.imgur.com/gvxnj3x.png)
I believe jayhawkco meant I-270.
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on November 06, 2021, 11:02:54 AM
Quote from: jlam on November 06, 2021, 10:40:32 AM
Quote from: CtrlAltDel on November 05, 2021, 10:33:34 PM
Quote from: jayhawkco on November 03, 2021, 04:46:39 PM
Quote from: jlam on November 03, 2021, 04:42:02 PM
A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.

I believe jayhawkco meant I-270.

That would definitely make more sense.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on December 19, 2021, 02:39:48 PM
Quote from: SkyPesos on October 12, 2021, 03:53:16 PM
All 4 odd divisible by 15 4xx interstate numbers are well known, and can be linked to a specific city or two just by mentioning the interstate:

405 - LA and Seattle
435 - Kansas City
465 - Indianapolis
495 - DC and NYC
Another random thought to add on to this one: The I-70 family intersects 3 of those 4, with the only one that it doesn't meet is I-405.

And between KC and DC, the beltways on the cities I-70 goes through are like 435 - 270 - 465 - 270, and then you have 495 and 270 intersecting in DC (though 270 isn't a beltway the last time). Neat little pattern.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on December 19, 2021, 03:29:03 PM
Both Interstate 74 and Interstate 80 are pushed through at least one cloverleaf loop ramp in the Quad Cities area of Illinois.

Both of these situations can be resolved by cleverly renumbering the highways, swapping I-80 and I-280, and having I-74 follow I-80's original routing instead of going through the downtown area.

This is the only case I know where an undesirable situation can be avoided by swapping a few signs around, without any new construction.
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on December 19, 2021, 04:17:38 PM
I know Illinois tried to do that more than once, but Iowa wouldn't go along.
Title: Re: Random facts about interstates and US routes
Post by: Hobart on December 20, 2021, 04:51:35 PM
Another random Illinois fact

Interstate 57 has 7 consecutive interchanges which are cloverleaf variants between 159th Street and Stunkel Road, depending on how far you're willing to push the definition of "cloverleaf variant".

Area on Google Maps:
https://www.google.com/maps/@41.5310222,-87.7457712,12.46z

Picture:
(https://cdn.discordapp.com/attachments/576638889838772234/922606867019096064/unknown.png)
Title: Re: Random facts about interstates and US routes
Post by: paulthemapguy on December 21, 2021, 03:04:15 PM
That fact isn't terribly unique; you could argue that almost every interchange configuration besides a diamond it based on the cloverleaf.  And a lot of old freeway sections are littered with cloverleafs or interchanges related to the cloverleaf.  Just look at I-55 from I-355 northeast to IL-171.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on January 21, 2022, 11:14:34 PM
Every x1 US route each x1 meets (or used to meet)

US 1: 21, 41
US 11: 21, 31, 41, 51, 61
US 21: 1, 11
US 31: 11, 41
US 41: 1, 11, 31
US 51: 11, 61
US 61: 51, 71
US 71: 61
US 81: None
US 91: 101
US 101: 91

So it seems like that US 81 is the only x1 US route to not meet another x1 at any point in its history.
Title: Re: Random facts about interstates and US routes
Post by: Flint1979 on January 22, 2022, 12:13:48 PM
Quote from: SkyPesos on January 21, 2022, 11:14:34 PM
Every x1 US route each x1 meets (or used to meet)

US 1: 21, 41
US 11: 21, 31, 41, 51, 61
US 21: 1, 11
US 31: 11, 41
US 41: 1, 11, 31, 41
US 51: 11, 61
US 61: 51, 71
US 71: 61
US 81: None
US 91: 101
US 101: 91

So it seems like that US 81 is the only x1 US route to not meet another x1 at any point in its history.
US-11 obviously has the most due to the NE-SW angle it travels.
Title: Re: Random facts about interstates and US routes
Post by: GaryV on January 22, 2022, 02:09:44 PM
US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?
Title: Re: Random facts about interstates and US routes
Post by: plain on January 22, 2022, 03:20:48 PM
Quote from: GaryV on January 22, 2022, 02:09:44 PM
US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?

That's what I'm thinking too
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on January 22, 2022, 03:27:51 PM
Quote from: GaryV on January 22, 2022, 02:09:44 PM
US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?

You speak of this (https://goo.gl/maps/t38z5SYAVwvhReDr5)?
Title: Re: Random facts about interstates and US routes
Post by: bandit957 on January 23, 2022, 01:02:00 PM
The U.S. and Interstate shields were based on shapes used in heraldry.
Title: Re: Random facts about interstates and US routes
Post by: milbfan on January 23, 2022, 04:11:07 PM
US 80 used to run all the way out to San Diego, from Tybee Island, GA.  It was gradually truncated on the west end to its current ending at I-30 in Dallas.

There is a marker at its end in Tybee Island that notes its ending and that the other end could be found in San Diego.
Title: Re: Random facts about interstates and US routes
Post by: bandit957 on January 23, 2022, 05:49:59 PM
The state route shield used by Michigan and North Carolina is called a "lozenge."
Title: Re: Random facts about interstates and US routes
Post by: MikieTimT on January 24, 2022, 11:34:02 PM
Quote from: jlam on October 05, 2021, 01:12:09 PM
All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.

I don't consider I-49 part of any superinterstate.  Hell, it hasn't even replaced US-71 completely in ANY of the states it runs through.
Title: Re: Random facts about interstates and US routes
Post by: Flint1979 on January 25, 2022, 09:00:03 AM
Quote from: bandit957 on January 23, 2022, 05:49:59 PM
The state route shield used by Michigan and North Carolina is called a "lozenge."
That's an old French word simply meaning diamond shape.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on January 25, 2022, 12:22:41 PM
Interstate 45, despite being only 284.9 miles long and intrastate as well, both uncommon for interstate ending in 0 or 5, still intersects three x0 interstates, the same number of x0 interstates the border to border Interstate 5 intersects with, and more than Interstate 85 intersects with two. 
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on January 25, 2022, 01:41:47 PM
Quote from: ethanhopkin14 on January 25, 2022, 12:22:41 PM
Interstate 45, despite being only 284.9 miles long and intrastate as well, both uncommon for interstate ending in 0 or 5, still intersects three x0 interstates, the same number of x0 interstates the border to border Interstate 5 intersects with, and more than Interstate 85 intersects with two.

True, but one of the X0s that I-45 intersects with is I-30, itself kind of iffy for an X0.
Title: Re: Random facts about interstates and US routes
Post by: jt4 on January 25, 2022, 01:53:08 PM
Quote from: bandit957 on January 23, 2022, 01:02:00 PM
The U.S. and Interstate shields were based on shapes used in heraldry.

I believe that's also why they are called "shields."
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on January 25, 2022, 02:27:33 PM
Quote from: Henry on October 06, 2021, 10:25:01 AM
Well, since you mentioned x0s meeting x5s, I'm flipping the script and doing the reverse. And I'm doing the full list this time, including the impostor I-45 (and BTW, I-30, which was excluded from the above list, meets 35, albeit split into two, and 45).

5: 10, 80, 90 (3)
15: 10, 40, 70, 80, 90 (5)
25: 10, 40, 70, 80, 90 (5)
35: 10, 20, 30, 40, 70, 80, 90 (7)
45: 10, 20, 30 (3)
55: 10, 20, 40, 70, 80, 90 (6)
65: 10, 20, 40, 70, 80, 90 (6)
75: 10, 20, 40, 70, 80, 90 (6)
85: 20, 40 (2)
95: 10, 20, 40, 80, 90 (5)

So I-85 interchanges with the fewest x0 interstates, and I-35 interchanges with the most. Of course, I-50 and I-60 don't exist, so none of them will meet all 9. Had I-70 and I-95 met as planned, it would've been 7 for I-70 and 6 for I-95.
For non-x5, I think I-77 is the winner, meeting 20, 40, 70, 80 and 90 (5).
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on January 25, 2022, 02:49:47 PM
US 66 once had a western terminus at Fletcher Drive at San Fernando Road.  It also may have never ended at 7th Street and Broadway but it definitely did end at Sunset Boulevard/Broadway:

https://www.gribblenation.org/2019/06/the-arroyo-seco-parkway-and-early.html?m=1
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on January 30, 2022, 06:47:16 PM
States by the number of x0 US highways that have passed through it at its peak:

5
- California (40, 50, 60, 70, 80)
- Illinois (20, 30, 40, 50, 60)

4
- Indiana (20, 30, 40, 50)
- Ohio (20, 30, 40, 50)
- Texas (60, 70, 80, 90)
- West Virginia (30, 40, 50, 60)

3
- Arizona (60, 70, 80)
- Idaho (10, 20, 30)
- Missouri (40, 50, 60)
- New Mexico (60, 70, 80)
- Pennsylvania (20, 30, 40)
- Utah (30, 40, 50)

2
- Alabama (80, 90)
- Colorado (40, 50)
- Iowa (20, 30)
- Kansas (40, 50)
- Nebraska (20, 30)
- New Jersey (30, 40)
- Louisiana (80, 90)
- Maryland (40, 50)
- Mississippi (80, 90)
- Nevada (40, 50)
- Oklahoma (60, 70)
- Oregon (20, 30)
- Virginia (50, 60)
- Wyoming (20, 30)

1
- Arkansas (70)
- DC (50)
- Delaware (40)
- Florida (90)
- Georgia (80)
- Kentucky (60)
- Massachusetts (20)
- Michigan (10)
- Minnesota (10)
- Montana (10)
- New York (20)
- North Carolina (70)
- North Dakota (10)
- Tennessee (70)
- Washington (10)
- Wisconsin (10)

0
- Alaska
- Connecticut
- Hawaii
- New Hampshire
- Maine
- Rhode Island
- South Carolina
- South Dakota
- Vermont
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on January 30, 2022, 07:32:44 PM
Quote from: BlueOutback7 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming. 
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on January 30, 2022, 08:33:42 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:32:44 PM
Quote from: BlueOutback7 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

I don't think that's right.

Dallas has I-20, I-30, and I-45, with I-35E being debatable.

New Mexico has I-10, I-25, and I-40, and Wyoming has I-25, I-80, and I-90.

Combined then, New Mexico and Wyoming have 5, which is more than either 3 or 4.
Title: Re: Random facts about interstates and US routes
Post by: hotdogPi on January 30, 2022, 08:39:13 PM
Quote from: CtrlAltDel on January 30, 2022, 08:33:42 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:32:44 PM
Quote from: BlueOutback7 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

I don't think that's right.

Dallas has I-20, I-30, and I-45, with I-35E being debatable.

New Mexico has I-10, I-25, and I-40, and Wyoming has I-25, I-80, and I-90.

Combined then, New Mexico and Wyoming have 5, which is more than either 3 or 4.

Did you consider 3dis?
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on January 30, 2022, 08:41:52 PM
Quote from: 1 on January 30, 2022, 08:39:13 PM
Quote from: CtrlAltDel on January 30, 2022, 08:33:42 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:32:44 PM
Quote from: BlueOutback7 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It's worth noting that Vermont doesn't have any x1 or x0 US routes. They have US 2, but that doesn't really count since it's discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don't have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

I don't think that's right.

Dallas has I-20, I-30, and I-45, with I-35E being debatable.

New Mexico has I-10, I-25, and I-40, and Wyoming has I-25, I-80, and I-90.

Combined then, New Mexico and Wyoming have 5, which is more than either 3 or 4.

Did you consider 3dis?

Does anyone consider 3dis when looking at X0s and X5s?
Title: Re: Random facts about interstates and US routes
Post by: hotdogPi on January 30, 2022, 08:44:39 PM
Quote from: CtrlAltDel on January 30, 2022, 08:41:52 PM
Does anyone consider 3dis when looking at X0s and X5s?

https://www.aaroads.com/forum/index.php?topic=20439.msg2232509#msg2232509
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on January 30, 2022, 08:46:38 PM
Quote from: 1 on January 30, 2022, 08:44:39 PM
Quote from: CtrlAltDel on January 30, 2022, 08:41:52 PM
Does anyone consider 3dis when looking at X0s and X5s?

https://www.aaroads.com/forum/index.php?topic=20439.msg2232509#msg2232509

Well, you got me there :-D. I'm still going to say that my point stands, though.
Title: Re: Random facts about interstates and US routes
Post by: FrCorySticha on January 31, 2022, 12:28:25 AM
Quote from: SkyPesos on January 30, 2022, 06:47:16 PM
States by the number of x0 US highways that have passed through it at its peak:

- Montana (10, 20)

It's not a long segment of the highway, only about 10 miles, but US 20 has run through Montana at West Yellowstone, MT since 1940.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on January 31, 2022, 11:45:42 AM
Quote from: CtrlAltDel on January 30, 2022, 08:33:42 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:32:44 PM
Quote from: BlueOutback7 on January 30, 2022, 07:29:34 PM
Quote from: ethanhopkin14 on January 30, 2022, 07:26:58 PM
Quote from: BlueOutback7 on January 30, 2022, 06:52:52 PM
It’s worth noting that Vermont doesn’t have any x1 or x0 US routes. They have US 2, but that doesn’t really count since it’s discontinuous. On another note, Vermont, North Dakota, Alaska, and Hawaii don’t have an x0 or x5 Interstate.

By contrast, New Mexico only has x0 or x5 interstates.

So does Wyoming.

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

I don't think that's right.

Dallas has I-20, I-30, and I-45, with I-35E being debatable.

New Mexico has I-10, I-25, and I-40, and Wyoming has I-25, I-80, and I-90.

Combined then, New Mexico and Wyoming have 5, which is more than either 3 or 4.

I tried to word this in a way that I wouldn't get scrutinized by technicalities in verbiage or suffixed routes.  Looks like I failed:

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

The City of Dallas has more combined x0 and x5 interstates.  I worded it that way so that no one would be confused if I was talking about x0s and x5s individually, or the group as a whole.  I looked into the future and thought "if I don't specify combined, people will think I am saying Dallas has more x0 interstates than New Mexico and more x5 interstates than New Mexico."  Truth is it has the same number of x0s as New Mexico, so I meant x0 and x5 as a group. That tally is Dalls-4 (I-35E, I-45, I-20, I-30), New Mexico-3 (I-10, I-40, I-25)  That's two x0s for both and two for Dallas and 1 for New Mexico x5s if you are scoring at home, and also to take any confusion out of it.  I hope that's clear.

than New Mexico and Wyoming.  I should have said "individually" at the end of that sentence so that it would be clear I was talking Dallas vs. New Mexico and separately Dallas vs. Wyoming and NOT Dallas vs. New Mexico/Wyoming super state.  My fault, but I really thought the sentence was pretty obvious and decided to drop the "individually" for the sake of brevity. 

As for I-35E, it's an x5 if you say I-35 goes from Laredo, TX to Duluth, MN.  If you say it's three discontinuous routes, then I-35E is just a 3di and that sentence is a lie.  Mainly, you cant say its one route from Laredo to Duluth and also say I-35E (or I-35W) is not a part of I-35.  Can't have it both ways.

In conclusion, I tried wording that sentence in a way that I wouldn't have to go through the above explanation and could get my point across in one sentence.   Plus, it was just a wacky stat that made me think its crazy a city has more mainline interstates than an entire state. 
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on February 01, 2022, 11:22:59 AM
Quote from: ethanhopkin14 on January 31, 2022, 11:45:42 AM
I tried to word this in a way that I wouldn't get scrutinized by technicalities in verbiage or suffixed routes.  Looks like I failed:

The City of Dallas has more combined x0 and x5 interstates than New Mexico and Wyoming.

The City of Dallas has more combined x0 and x5 interstates.  I worded it that way so that no one would be confused if I was talking about x0s and x5s individually, or the group as a whole.  I looked into the future and thought "if I don't specify combined, people will think I am saying Dallas has more x0 interstates than New Mexico and more x5 interstates than New Mexico."  Truth is it has the same number of x0s as New Mexico, so I meant x0 and x5 as a group. That tally is Dalls-4 (I-35E, I-45, I-20, I-30), New Mexico-3 (I-10, I-40, I-25)  That's two x0s for both and two for Dallas and 1 for New Mexico x5s if you are scoring at home, and also to take any confusion out of it.  I hope that's clear.

than New Mexico and Wyoming.  I should have said "individually" at the end of that sentence so that it would be clear I was talking Dallas vs. New Mexico and separately Dallas vs. Wyoming and NOT Dallas vs. New Mexico/Wyoming super state.  My fault, but I really thought the sentence was pretty obvious and decided to drop the "individually" for the sake of brevity. 

As for I-35E, it's an x5 if you say I-35 goes from Laredo, TX to Duluth, MN.  If you say it's three discontinuous routes, then I-35E is just a 3di and that sentence is a lie.  Mainly, you cant say its one route from Laredo to Duluth and also say I-35E (or I-35W) is not a part of I-35.  Can't have it both ways.

In conclusion, I tried wording that sentence in a way that I wouldn't have to go through the above explanation and could get my point across in one sentence.   Plus, it was just a wacky stat that made me think its crazy a city has more mainline interstates than an entire state.

That makes sense.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 03, 2022, 10:23:56 AM
I-80's western and easternmost state line crossings are almost mirror images of each other, and have a lot in common, like paralleling a river, jersey barrier median with narrow left shoulders, and going N-S on the side of the border that's closer to the ocean.
(https://i.imgur.com/Q4aqVu0.png)
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on February 03, 2022, 10:52:54 AM
I-89 was originally planned in the 1950's to follow US 7 all the way down to Norwalk, Connecticut.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 04, 2022, 10:20:01 AM
Shortest N-S 2di between each x0 that are next to each other on the grid

Between I-10 and I-20: I-55 (158 miles). I-59 is very close, at 161 miles.
Between I-20 and I-30: I-35W (6 miles)
Between I-30 and I-40: Well, there's only one option currently, I-35
Between I-20 and I-40 (since those two are next to each other east of the Mississippi): I-95 (119 miles), with I-77 (127 miles) as a close second
Between I-40 and I-70: I-55 (278 miles), with I-65 not far behind (286 miles)
Between I-70 and I-80: I-79 (79 miles), with I-99 (87 miles) in second place.
Between I-80 and I-90: Tie between I-69 and I-75 (0 miles). Shortest nonzero distance is I-65, at 2 miles.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 04, 2022, 12:26:51 PM
Quote from: SkyPesos on February 04, 2022, 10:20:01 AM
Between I-30 and I-40: Well, there's only one option currently, I-35

...and the distance is?
Title: Re: Random facts about interstates and US routes
Post by: GaryV on February 04, 2022, 02:32:46 PM
Quote from: ethanhopkin14 on February 04, 2022, 12:26:51 PM
Quote from: SkyPesos on February 04, 2022, 10:20:01 AM
Between I-30 and I-40: Well, there's only one option currently, I-35

...and the distance is?

"The proof is left as an exercise for the reader."
Title: Re: Random facts about interstates and US routes
Post by: averageroadgeek on February 04, 2022, 04:06:11 PM
US 59 is currently the only route to intersect with every x0 US Highway and Interstate.
US Highway Junctions:
US 10: Detroit Lakes MN
US 20: Holstien IA
US 30: Denison IA
US 40: Lawrence KS
US 50: Ottawa KS (US 50 is concurrent with I-35)
US 60: Afton OK
US 70: De Queen AR
US 80: Marshall TX
US 90: Houston (while concurrent with I-69)
If you count US 2, it meets in Erskine MN
Interstate Junctions:
I-90: Worthington MN
I-80: Avoca IA
I-70: Lawrence KS
I-40: Sallisaw OK
I-30: Texarkana
I-20: Marshall TX
I-10: Houston (while concurrent with I-69)

Interstate 35 is very close (counting the E and W splits), but misses US 80 by a few miles in Dallas.
Title: Re: Random facts about interstates and US routes
Post by: Sapphuby on February 05, 2022, 09:45:24 PM
Quote from: SkyPesos on January 30, 2022, 06:47:16 PM
States by the number of x0 US highways that have passed through it at its peak:

5
- California (40, 50, 60, 70, 80)
- Illinois (20, 30, 40, 50, 60)

4
- Indiana (20, 30, 40, 50)
- Ohio (20, 30, 40, 50)
- Texas (60, 70, 80, 90)
- West Virginia (30, 40, 50, 60)

3
- Arizona (60, 70, 80)
- Idaho (10, 20, 30)
- Missouri (40, 50, 60)
- New Mexico (60, 70, 80)
- Pennsylvania (20, 30, 40)
- Utah (30, 40, 50)

2
- Alabama (80, 90)
- Colorado (40, 50)
- Iowa (20, 30)
- Kansas (40, 50)
- Nebraska (20, 30)
- New Jersey (30, 40)
- Louisiana (80, 90)
- Maryland (40, 50)
- Mississippi (80, 90)
- Nevada (40, 50)
- Oklahoma (60, 70)
- Oregon (20, 30)
- Virginia (50, 60)
- Wyoming (20, 30)

1
- Arkansas (70)
- DC (50)
- Delaware (40)
- Florida (90)
- Georgia (80)
- Kentucky (60)
- Massachusetts (20)
- Michigan (10)
- Minnesota (10)
- Montana (10)
- New York (20)
- North Carolina (70)
- North Dakota (10)
- Tennessee (70)
- Washington (10)
- Wisconsin (10)

0
- Alaska
- Connecticut
- Hawaii
- New Hampshire
- Maine
- Rhode Island
- South Carolina
- South Dakota
- Vermont

:-D U.S. 60 barely counts by the skin of its teeth for being in Illinois for a grand total of less than 3 miles, serving Cairo only.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 05, 2022, 10:07:18 PM
Quote from: Sapphuby on February 05, 2022, 09:45:24 PM
:-D U.S. 60 barely counts by the skin of its teeth for being in Illinois for a grand total of less than 3 miles, serving Cairo only.
Would've been much more significant in the state had the Los Angeles-Chicago US route kept the US 60 number, instead of getting changed to 66 after Kentucky complained about not getting an x0.

Illinois actually had 6 x0 US routes planned at one point, with US 10 planned to use US 12's routing between the Twin Cities and Detroit via Chicago in the early days. Pretty impressive if you ask me.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on February 05, 2022, 10:52:43 PM
Quote from: SkyPesos on February 05, 2022, 10:07:18 PM
Quote from: Sapphuby on February 05, 2022, 09:45:24 PM
:-D U.S. 60 barely counts by the skin of its teeth for being in Illinois for a grand total of less than 3 miles, serving Cairo only.
Would've been much more significant in the state had the Los Angeles-Chicago US route kept the US 60 number, instead of getting changed to 66 after Kentucky complained about not getting an x0.

Illinois actually had 6 x0 US routes planned at one point, with US 10 planned to use US 12's routing between the Twin Cities and Detroit via Chicago in the early days. Pretty impressive if you ask me.

The US 60 we got was fine and stood up to the test of time.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on February 06, 2022, 08:44:32 PM
Something I didn’t realize was that I-215 around Salt Lake City is the only auxiliary Interstate in Utah since I-415 was decommissioned.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 07, 2022, 08:26:43 AM
Quote from: BlueOutback7 on February 06, 2022, 08:44:32 PM
Something I didn't realize was that I-215 around Salt Lake City is the only auxiliary Interstate in Utah since I-415 was decommissioned.

North Dakota and Wyoming are similar for having only one 3di and they are both poor excuses for 3di.  North Dakota's is just a random leg of a much larger freeway and Wyoming's isn't even a freeway.  West Virginia makes the list for having one 3di that "starts" in another state, so you could argue that it might not have gotten a 3di if it wasn't for another state initiating it. 
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on February 07, 2022, 11:17:07 AM
Quote from: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.

Same deal in Arizona, although they did have two 3dis at one point. I-410 being used on the southernmost piece of I-17 and I-510 for AZ 51. There was also I-710 planned for Tucson.
Title: Re: Random facts about interstates and US routes
Post by: cstp3103 on February 07, 2022, 02:17:55 PM
Quote from: ethanhopkin14 on February 07, 2022, 08:26:43 AM
North Dakota and Wyoming are similar for having only one 3di and they are both poor excuses for 3di.

You can add Vermont to the list too. I always forget I-189 exists, and for good reason.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 07, 2022, 03:06:10 PM
Quote from: cstp3103 on February 07, 2022, 02:17:55 PM
Quote from: ethanhopkin14 on February 07, 2022, 08:26:43 AM
North Dakota and Wyoming are similar for having only one 3di and they are both poor excuses for 3di.

You can add Vermont to the list too. I always forget I-189 exists, and for good reason.

In fairness I-189 was supposed to be a real highway.
Title: Re: Random facts about interstates and US routes
Post by: US20IL64 on February 07, 2022, 03:35:04 PM
Quote from: BlueOutback7 on February 07, 2022, 11:17:07 AM
Quote from: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.

Same deal in Arizona, although they did have two 3dis at one point. I-410 being used on the southernmost piece of I-17 and I-510 for AZ 51. There was also I-710 planned for Tucson.

AZ's Loop freeways in PHX are state funded, so no Interstate signs, and no standards to adhere to.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 07, 2022, 03:59:51 PM
Quote from: HighwayStar on February 07, 2022, 03:06:10 PM
Quote from: cstp3103 on February 07, 2022, 02:17:55 PM
Quote from: ethanhopkin14 on February 07, 2022, 08:26:43 AM
North Dakota and Wyoming are similar for having only one 3di and they are both poor excuses for 3di.

You can add Vermont to the list too. I always forget I-189 exists, and for good reason.

In fairness I-189 was supposed to be a real highway.

Yeah, but because it has the stub-out, it really is a glorified exit ramp of I-89.
Title: Re: Random facts about interstates and US routes
Post by: bob7374 on February 07, 2022, 04:09:25 PM
For those interested in Interstate trivia, the FHWA Interstate Route Log and Finder List has been updated as of Jan. 26th. Unfortunately, the 2di Table 1 does not include all new interstate designations, such as I-42 in NC, there are some new listings in Tables 2 and 3, such as for I-587 in NC and I-195 in DC:
https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/ (https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/)
Title: Re: Random facts about interstates and US routes
Post by: Rothman on February 07, 2022, 04:19:17 PM
Quote from: bob7374 on February 07, 2022, 04:09:25 PM
For those interested in Interstate trivia, the FHWA Interstate Route Log and Finder List has been updated as of Jan. 26th. Unfortunately, the 2di Table 1 does not include all new interstate designations, such as I-42 in NC, there are some new listings in Tables 2 and 3, such as for I-587 in NC and I-195 in DC:
https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/ (https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/)
They botched it again.
Title: Re: Random facts about interstates and US routes
Post by: formulanone on February 10, 2022, 04:46:38 PM
Quote from: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.

I thought that Paseo del Norte (NM 423) was supposed to be a loop, but fizzled out for one of the typical six reasons (no money, freeway revolt, land acquisition failure, environmental impact, no demand, physically impossible).

I should just create a six-sided die with those reasons, and roll it whenever someone asks "why wasn't the Northern Arc of the Cross-Phantom-Boomtown Expressway built?"
Title: Re: Random facts about interstates and US routes
Post by: US 89 on February 11, 2022, 12:41:43 AM
Quote from: formulanone on February 10, 2022, 04:46:38 PM
Quote from: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.

I thought that Paseo del Norte (NM 423) was supposed to be a loop, but fizzled out for one of the typical six reasons (no money, freeway revolt, land acquisition failure, environmental impact, no demand, physically impossible).

It was supposed to be the northern side of a loop:

(https://betterburque.files.wordpress.com/2018/07/proposed-inner-beltway.jpg)

However, unless someone can dig up evidence to the contrary, it was never planned as an interstate.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 01:34:24 AM
Quote from: formulanone on February 10, 2022, 04:46:38 PM
Quote from: CNGL-Leudimin on February 07, 2022, 10:06:17 AM
Meanwhile New Mexico appears to not even have idea of what a 3di is, since they have never planned one.

I thought that Paseo del Norte (NM 423) was supposed to be a loop, but fizzled out for one of the typical six reasons (no money, freeway revolt, land acquisition failure, environmental impact, no demand, physically impossible).

I should just create a six-sided die with those reasons, and roll it whenever someone asks "why wasn't the Northern Arc of the Cross-Phantom-Boomtown Expressway built?"


I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I would just do a coin with two sides (too broke, too many CAVE people complained)
Title: Re: Random facts about interstates and US routes
Post by: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...
Title: Re: Random facts about interstates and US routes
Post by: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on February 11, 2022, 02:02:27 PM
Quote from: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.

It's not consistently signed E-W. I know New York signs it N-S, and am not sure about Pennsylvania.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on February 11, 2022, 02:56:09 PM
Quote from: hbelkins on February 11, 2022, 02:02:27 PM
Quote from: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.

It's not consistently signed E-W. I know New York signs it N-S, and am not sure about Pennsylvania.

Pennsylvania does sign it north south. This happens once it crosses over from Ohio.
Title: Re: Random facts about interstates and US routes
Post by: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 03:18:29 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

For years people have been telling us not to worry about China because they don't do business our way, but the reality is all the stuff still gets built, and I frankly no longer feel warm and fuzzy just knowing that they did not do it the western way. Results do matter.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on February 11, 2022, 03:19:39 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

And if you happen to be working one of said Chinese infrastructure projects, you're probably getting abused and paid a tiny fraction of what your labor is worth. Not to mention the lack of any sort of environmental regulations over there.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 03:21:26 PM
Quote from: US 89 on February 11, 2022, 03:19:39 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

And if you happen to be working one of said Chinese infrastructure projects, you're probably getting abused and paid a tiny fraction of what your labor is worth. Not to mention the lack of any sort of environmental regulations over there.

Again, it really does not matter at the end of the day. The fact that they can get things done, and we can't is a serious problem. The fact that we don't approve of their methods of doing business does not really make a difference in the end.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on February 11, 2022, 03:48:03 PM
Quote from: HighwayStar on February 11, 2022, 03:21:26 PM
The end justifies the means.

Nah.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 03:49:27 PM
Quote from: US 89 on February 11, 2022, 03:48:03 PM
Quote from: HighwayStar on February 11, 2022, 03:21:26 PM
The end justifies the means.

Nah.

Strawman. I'm not saying the ends justify the means, I am saying that the US jumping up and down complaining that China does not play by our rules has failed to stop them thus far, and continuing to use the fact that we don't like how they do things as a justification for why our broken system is adequate is getting us nowhere.
Title: Re: Random facts about interstates and US routes
Post by: Kulerage on February 11, 2022, 03:50:42 PM
Quote from: BlueOutback7 on February 11, 2022, 02:56:09 PM
Quote from: hbelkins on February 11, 2022, 02:02:27 PM
Quote from: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.

It's not consistently signed E-W. I know New York signs it N-S, and am not sure about Pennsylvania.

Pennsylvania does sign it north south. This happens once it crosses over from Ohio.
The only *predominantly east-west US highway to connect Mexico and Canada is US 62.

Better? ;-)
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on February 11, 2022, 03:51:25 PM
It's weird.  I just jumped into the NFL (2021 Season) thread, went to the most recent posts and wondered, "Did I actually click the right thread?  This is all about filming movie road trip scenes on two lane roads."  Then I came over here, into the Random facts about interstates and US routes thread, went to the most recent posts and wondered, "Did I actually click the right thread?  This is all about Chinese manufacturing."

Only on AARoads.
Title: Re: Random facts about interstates and US routes
Post by: SEWIGuy on February 11, 2022, 04:12:09 PM
Quote from: HighwayStar on February 11, 2022, 03:21:26 PM
Quote from: US 89 on February 11, 2022, 03:19:39 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

And if you happen to be working one of said Chinese infrastructure projects, you're probably getting abused and paid a tiny fraction of what your labor is worth. Not to mention the lack of any sort of environmental regulations over there.

Again, it really does not matter at the end of the day. The fact that they can get things done, and we can't is a serious problem. The fact that we don't approve of their methods of doing business does not really make a difference in the end.


What advantage do they have by "getting things done" in China that we won't allow here?
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 11, 2022, 04:24:54 PM
Quote from: SEWIGuy on February 11, 2022, 04:12:09 PM
Quote from: HighwayStar on February 11, 2022, 03:21:26 PM
Quote from: US 89 on February 11, 2022, 03:19:39 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

And if you happen to be working one of said Chinese infrastructure projects, you're probably getting abused and paid a tiny fraction of what your labor is worth. Not to mention the lack of any sort of environmental regulations over there.

Again, it really does not matter at the end of the day. The fact that they can get things done, and we can't is a serious problem. The fact that we don't approve of their methods of doing business does not really make a difference in the end.


What advantage do they have by "getting things done" in China that we won't allow here?

While our infrastructure crumbles away China has built trillions of dollars worth in just the last 4 decades. Between 1986 and 2013 China went from the world's 8 largest to world's largest economy. Meanwhile it takes decades for us to replace a bridge or get anything new built.
Title: Re: Random facts about interstates and US routes
Post by: formulanone on February 11, 2022, 05:27:24 PM
Quote from: JayhawkCO on February 11, 2022, 03:51:25 PM
Only on AARoads.

(Or possibly CANRoads.)
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on February 11, 2022, 05:42:43 PM
Quote from: formulanone on February 11, 2022, 05:27:24 PM
Quote from: JayhawkCO on February 11, 2022, 03:51:25 PM
Only on AARoads.

(Or possibly CANRoads.)

Or any road related page/site, especially on Facebook.
Title: Re: Random facts about interstates and US routes
Post by: hbelkins on February 12, 2022, 08:59:42 PM
Quote from: Kulerage on February 11, 2022, 03:50:42 PM
Quote from: BlueOutback7 on February 11, 2022, 02:56:09 PM
Quote from: hbelkins on February 11, 2022, 02:02:27 PM
Quote from: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.

It's not consistently signed E-W. I know New York signs it N-S, and am not sure about Pennsylvania.

Pennsylvania does sign it north south. This happens once it crosses over from Ohio.
The only *predominantly east-west US highway to connect Mexico and Canada is US 62.

Better? ;-)

Has anyone ever done an analysis of US 62 to determine if it's more E-W or N-S? I've seen some people comment on other diagonal routes, such as I-71 (signed N-S), US 42 (E-W in Kentucky, N-S on Ohio), I-26 (E-W), and other routes. There's some type of formula that can determine if a route is more N-S than E-W, but I don't know what it is or how to apply it.
Title: Re: Random facts about interstates and US routes
Post by: TheHighwayMan3561 on February 12, 2022, 09:02:12 PM
Quote from: SEWIGuy on February 11, 2022, 04:12:09 PM
Quote from: HighwayStar on February 11, 2022, 03:21:26 PM
Quote from: US 89 on February 11, 2022, 03:19:39 PM
Quote from: Scott5114 on February 11, 2022, 03:12:34 PM
Quote from: HighwayStar on February 11, 2022, 11:25:35 AM
Quote from: formulanone on February 11, 2022, 09:28:56 AM
Quote from: HighwayStar on February 11, 2022, 01:34:24 AM
I would say you can cut that list down. "physically impossible" is never a real reason, it is always a lame excuse for covering up another reason.

I stand up next to a mountain, chopped it down with the side of my hand.

QuoteI would just do a coin with two sides (too broke, too many CAVE people complained)

Of course you'd use a coin. Everything is textbook simple and everyone plays by the rules and gets a turn for the same goal. Or sometimes it's because Senator Dogbreath promised his ex-mistress that he won't build it through their elderberry farmland, in exchange for not getting shamed by the press.

Jebus, have a little fun with this hobby for once. It's not the 1950s and it's not SimCIty anymore...those days are history.

Those days are only history here it seems. China has no issue outbuilding us in infrastructure at every turn. Though fortunately history can and does repeat itself...

China will also disappear you if your opposition to an infrastructure project becomes too inconvenient.

And if you happen to be working one of said Chinese infrastructure projects, you're probably getting abused and paid a tiny fraction of what your labor is worth. Not to mention the lack of any sort of environmental regulations over there.

Again, it really does not matter at the end of the day. The fact that they can get things done, and we can't is a serious problem. The fact that we don't approve of their methods of doing business does not really make a difference in the end.


What advantage do they have by "getting things done" in China that we won't allow here?

Basically because he wants people in the path of a freeway to be told they can go get fucked, your house is coming down next week whether you're still inside it or not.
Title: Re: Random facts about interstates and US routes
Post by: HighwayStar on February 12, 2022, 09:02:53 PM
Quote from: hbelkins on February 12, 2022, 08:59:42 PM
Quote from: Kulerage on February 11, 2022, 03:50:42 PM
Quote from: BlueOutback7 on February 11, 2022, 02:56:09 PM
Quote from: hbelkins on February 11, 2022, 02:02:27 PM
Quote from: Kulerage on February 11, 2022, 02:00:32 PM
The only east-west US highway to connect Mexico and Canada is US 62.

It's not consistently signed E-W. I know New York signs it N-S, and am not sure about Pennsylvania.

Pennsylvania does sign it north south. This happens once it crosses over from Ohio.
The only *predominantly east-west US highway to connect Mexico and Canada is US 62.

Better? ;-)

Has anyone ever done an analysis of US 62 to determine if it's more E-W or N-S? I've seen some people comment on other diagonal routes, such as I-71 (signed N-S), US 42 (E-W in Kentucky, N-S on Ohio), I-26 (E-W), and other routes. There's some type of formula that can determine if a route is more N-S than E-W, but I don't know what it is or how to apply it.

A simplistic approach would look at the delta in longitude versus the delta in latitude.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 12, 2022, 09:06:13 PM
Quote from: HighwayStar on February 12, 2022, 09:02:53 PM
A simplistic approach would look at the delta in longitude versus the delta in latitude.
I'm pretty sure that was used for I-4, and the E-W distance beat out the N-S distance by a small margin, which is why it's an E-W highway.
Title: Re: Random facts about interstates and US routes
Post by: hotdogPi on February 12, 2022, 09:11:46 PM
US 62 is E-W by about a 2:1 ratio.
Title: Re: Random facts about interstates and US routes
Post by: US 89 on February 12, 2022, 11:50:29 PM
Quote from: HighwayStar on February 12, 2022, 09:02:53 PM
A simplistic approach would look at the delta in longitude versus the delta in latitude.

Potential problem: the size of a degree of longitude increases the closer you get to the equator.
Title: Re: Random facts about interstates and US routes
Post by: paulthemapguy on February 14, 2022, 09:14:38 AM
Quote from: US 89 on February 12, 2022, 11:50:29 PM
Quote from: HighwayStar on February 12, 2022, 09:02:53 PM
A simplistic approach would look at the delta in longitude versus the delta in latitude.

Potential problem: the size of a degree of longitude increases the closer you get to the equator.

I'd say the potential is very very low.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 16, 2022, 12:23:03 PM
US 40 lines up with the same numbered 40th parallel pretty well, passing through some of the metro areas on or near it like SLC, Denver, Indianapolis, Columbus and Philadelphia/Wilmington.
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on February 16, 2022, 03:03:30 PM
However, when it extended all the way to California, it dipped considerably South after Winnemucca. It should have passed through Redding.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 16, 2022, 03:24:24 PM
Quote from: CNGL-Leudimin on February 16, 2022, 03:03:30 PM
However, when it extended all the way to California, it dipped considerably South after Winnemucca. It should have passed through Redding.
SF to Sacramento is probably the most noticeable dip in US 40 as a whole. Sacramento is about the same latitude as St Louis (both at 38.6), which US 40 also dips to the south to serve.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on February 16, 2022, 03:42:44 PM
Quote from: SkyPesos on February 16, 2022, 03:24:24 PM
Quote from: CNGL-Leudimin on February 16, 2022, 03:03:30 PM
However, when it extended all the way to California, it dipped considerably South after Winnemucca. It should have passed through Redding.
SF to Sacramento is probably the most noticeable dip in US 40 as a whole. Sacramento is about the same latitude as St Louis (both at 38.6), which US 40 also dips to the south to serve.

US 40A through the Feather River Highway crossed the Sierra Nevada Range at a much northern latitude and then took a sudden southward jog upon reaching Sacramento Valley.
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on February 26, 2022, 04:38:13 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

A couple more with 3...

I-80:  Colorado, Michigan, New York
I-49:  Texas, Oklahoma, Kansas
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 26, 2022, 06:27:38 PM
Quote from: Mapmikey on February 26, 2022, 04:38:13 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

A couple more with 3...

I-80:  Colorado, Michigan, New York
I-49:  Texas, Oklahoma, Kansas

Not more but I-44 has Kansas and Illinois. 

Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 26, 2022, 06:32:50 PM
I-69 (when finished): Missouri, Illinois, Ohio
Title: Re: Random facts about interstates and US routes
Post by: skluth on February 27, 2022, 11:31:05 AM
Quote from: Mapmikey on February 26, 2022, 04:38:13 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

A couple more with 3...

I-80:  Colorado, Michigan, New York
I-49:  Texas, Oklahoma, Kansas
Will this be true when I-49 is complete? Currently, the Texarkana bypass section truncates at US 71 on the state line. The ramps go into Texas according to Google Maps, but I don't know the accuracy of the state line shown. In any case, it does look like I-49 will eventually go through a tiny bit of Texas.
Title: Re: Random facts about interstates and US routes
Post by: Sapphuby on February 27, 2022, 12:08:44 PM
Quote from: skluth on February 27, 2022, 11:31:05 AM
Quote from: Mapmikey on February 26, 2022, 04:38:13 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

A couple more with 3...

I-80:  Colorado, Michigan, New York
I-49:  Texas, Oklahoma, Kansas
Will this be true when I-49 is complete? Currently, the Texarkana bypass section truncates at US 71 on the state line. The ramps go into Texas according to Google Maps, but I don't know the accuracy of the state line shown. In any case, it does look like I-49 will eventually go through a tiny bit of Texas.

It's in the highway plans to have I-49 go through a small bit of Texas, but the project isn't on the bucket list for now as the bridge(s) would be very expensive.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on February 27, 2022, 01:28:08 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

The northern I-87 misses New Jersey, Connecticut, Massachusetts, and Vermont.

Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 27, 2022, 03:45:02 PM
Quote from: BlueOutback7 on February 27, 2022, 01:28:08 PM
Quote from: ethanhopkin14 on February 26, 2022, 03:45:08 PM
I am going to take a stab and say I-29 holds the record of almost entering the most states but not entering them at 3 (Kansas, Nebraska and Minnesota).  Can another do better?

The northern I-87 misses New Jersey, Connecticut, Massachusetts, and Vermont.

I haven't gotten too much into it because when I first said I-29, I said "almost entering the most states but not entering them" but didn't define what "almost entering a state" really means.  That's my fault. 

I-29 hugs the banks of the Missouri River in Council Bluffs and in Sioux City (like literally right on the bank!) which is the state line between Iowa and Nebraska and hugs the banks of The Red River of the North right before it enters Canada and is a mere 1,000 feet from the state line between North Dakota and Minnesota at that point.  Basically it occupies the most extreme edge of physical land in the state it is in without leaving the state.  The only give me in the bunch is Kansas, where it terminates 1.6 miles from the state line in Kansas City. 

I-87 comes the closest to New Jersey, so I will give you that.  Connecticut and Vermont are both a stretch (it comes 3,746 feet from the banks of Lake Champlain, but its a long way into the lake before you get to the state line, and Connecticut, the best I-87 can do for it is 6.67 miles away).  It is 26 miles from Massachusetts which is way too far.

Again, I know I didn't give parameters, but I was looking for something along those lines.  I didn't even consider I-10 even though its 1,180 feet from Mexico at one point, all because there are another 2 roads between it and the border.  To me that was way too far for this definition.  I was looking for roads that pretty much touch the border but don't enter the state. 
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on March 22, 2022, 01:47:41 PM
3 longest interstates without a 3di for each first digit. Interstates with a former 3di of that first digit are included here, but are not counted towards the 3 in the list.

1xx:
- I-20
- I-25
- I-64 and I-81 both formerly had one (now I-69 and I-26 respectively)
- I-44

2xx:
- I-81
- I-84 (both)
- I-49

3xx:
- I-40
- I-20
- I-5

4xx:
- I-20
- I-15 formerly had one (now I-215 UT)
- I-25
- I-55

5xx:
- I-70
- I-94 formerly had one (now I-190 IL)
- I-25
- I-84 (both)

6xx:
- I-20
- I-15
- I-25

7xx:
- I-40
- I-70
- I-75

8xx:
- I-10
- I-70
- I-75

9xx:
- I-40
- I-70
- I-95
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on March 22, 2022, 04:32:44 PM
FYI there's an unsigned I-305 in Sacramento. Only existing per FHWA, I believe Caltrans doesn't recognize it.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on March 22, 2022, 04:50:37 PM
Quote from: CNGL-Leudimin on March 22, 2022, 04:32:44 PM
FYI there's an unsigned I-305 in Sacramento. Only existing per FHWA, I believe Caltrans doesn't recognize it.

Kind of with Caltrans but rather more so the  State Legislature:

https://www.gribblenation.org/2021/01/us-route-50-in-west-sacramento-and.html?m=1
Title: Re: Random facts about interstates and US routes
Post by: Sapphuby on March 23, 2022, 09:07:15 AM
US 31W and US 31E come within three miles of each other near Cave City, KY, but never intersecting for miles.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on March 25, 2022, 09:10:51 PM
US 21 is an exception to the "x1 US routes are major" rule, even in its peak length. Four of its neighboring N-S routes (19, 23, 25 and 27) are longer than it, probably because 19 goes through FL, 25 goes through MI, 23 and 27 goes through both, and 21 goes through neither. I wonder how US 21 got the x1 designation then...
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on March 25, 2022, 09:15:22 PM
Quote from: SkyPesos on March 25, 2022, 09:10:51 PM
US 21 is an exception to the "x1 US routes are major" rule, even in its peak length. Four of its neighboring N-S routes (19, 23, 25 and 27) are longer than it, probably because 19 goes through FL, 25 goes through MI, 23 and 27 goes through both, and 21 goes through neither. I wonder how US 21 got the x1 designation then...

That’s because US 21 used to run to Cleveland, Ohio before I-77 came along. Back then, it was a true x1 US highway. Now it ends in Wytheville, Virginia. And also, 21 is west of 19, which was done to keep the grid in order.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on March 25, 2022, 09:50:56 PM
Quote from: BlueOutback7 on March 25, 2022, 09:15:22 PM
Quote from: SkyPesos on March 25, 2022, 09:10:51 PM
US 21 is an exception to the "x1 US routes are major" rule, even in its peak length. Four of its neighboring N-S routes (19, 23, 25 and 27) are longer than it, probably because 19 goes through FL, 25 goes through MI, 23 and 27 goes through both, and 21 goes through neither. I wonder how US 21 got the x1 designation then...

That's because US 21 used to run to Cleveland, Ohio before I-77 came along. Back then, it was a true x1 US highway. Now it ends in Wytheville, Virginia. And also, 21 is west of 19, which was done to keep the grid in order.
You missed the bold part. I know that it used to go all the way north to Cleveland, it's that 19, 23, 25 and 27 are still longer even with that.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on March 25, 2022, 10:11:18 PM
Quote from: SkyPesos on March 25, 2022, 09:50:56 PM
Quote from: BlueOutback7 on March 25, 2022, 09:15:22 PM
Quote from: SkyPesos on March 25, 2022, 09:10:51 PM
US 21 is an exception to the "x1 US routes are major" rule, even in its peak length. Four of its neighboring N-S routes (19, 23, 25 and 27) are longer than it, probably because 19 goes through FL, 25 goes through MI, 23 and 27 goes through both, and 21 goes through neither. I wonder how US 21 got the x1 designation then...

That’s because US 21 used to run to Cleveland, Ohio before I-77 came along. Back then, it was a true x1 US highway. Now it ends in Wytheville, Virginia. And also, 21 is west of 19, which was done to keep the grid in order.
You missed the bold part. I know that it used to go all the way north to Cleveland, it's that 19, 23, 25 and 27 are still longer even with that.

Shoot, I did miss that. Maybe US 21 could have reached Florida if it were sent down US 301 in Orangeburg, SC and assumed that all the way down to Sarasota with the rest of 21 becoming a state route. 301 is rather long for a 3dus.
Title: Re: Random facts about interstates and US routes
Post by: Flint1979 on March 25, 2022, 10:28:51 PM
US 1 thru 31 are all original 1926 routes.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on March 26, 2022, 08:52:47 AM
Quote from: BlueOutback7 on March 25, 2022, 10:11:18 PM
Quote from: SkyPesos on March 25, 2022, 09:50:56 PM
Quote from: BlueOutback7 on March 25, 2022, 09:15:22 PM
Quote from: SkyPesos on March 25, 2022, 09:10:51 PM
US 21 is an exception to the "x1 US routes are major" rule, even in its peak length. Four of its neighboring N-S routes (19, 23, 25 and 27) are longer than it, probably because 19 goes through FL, 25 goes through MI, 23 and 27 goes through both, and 21 goes through neither. I wonder how US 21 got the x1 designation then...

That's because US 21 used to run to Cleveland, Ohio before I-77 came along. Back then, it was a true x1 US highway. Now it ends in Wytheville, Virginia. And also, 21 is west of 19, which was done to keep the grid in order.
You missed the bold part. I know that it used to go all the way north to Cleveland, it's that 19, 23, 25 and 27 are still longer even with that.

Shoot, I did miss that. Maybe US 21 could have reached Florida if it were sent down US 301 in Orangeburg, SC and assumed that all the way down to Sarasota with the rest of 21 becoming a state route. 301 is rather long for a 3dus.

Also not considered:

On the original 1925 list, US 21 ran to Jacksonville FL.

While the final list truncated that to Yemasee SC, US 21 was still longer than US 19 (Lawrenceville GA to Bluff City TN and Gauley Br WV to Erie PA), US 23 (Portsmouth OH to Mackinac City MI) and US 27 (Cincinnati to Cheboygan MI).

US 19 and US 23 were extended long disances in 1930 and US 27 surpassed US 21's length in 1934.

Incidently when US 23 was being extended south, AASHO said it had to replace US 19 south of Asheville with US 19 being rerouted to run south of Franklin NC so that US 23 would stay west of US 19.  There was so much protest from Western NC that AASHO relented and US 23 was run the way it does now in NC and GA.



Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on April 04, 2022, 12:37:21 PM
US-191 is an original route but has nothing in common today with it's original route.
I don't know if it's the only one, but still pretty unusual. 
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 04, 2022, 12:44:52 PM
Quote from: jmacswimmer on October 06, 2021, 11:40:28 AM
Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
^ I've always thought I-29/I-49 as a better I-45 than actual I-45 itself.

Agreed - and then I-45 could be a better I-41 than actual I-41!  :-D
[/fictional]
Didn't know how I skipped over this post initially, but if that is the case, that would make two 41 and 75 Interstate/Parallel US Route pairs: I-75/US 41 and I-41/US 75.
Title: Re: Random facts about interstates and US routes
Post by: paulthemapguy on April 04, 2022, 09:04:56 PM
Quote from: SkyPesos on April 04, 2022, 12:44:52 PM
Quote from: jmacswimmer on October 06, 2021, 11:40:28 AM
Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
^ I've always thought I-29/I-49 as a better I-45 than actual I-45 itself.

Agreed - and then I-45 could be a better I-41 than actual I-41!  :-D
[/fictional]
Didn't know how I skipped over this post initially, but if that is the case, that would make two 41 and 75 Interstate/Parallel US Route pairs: I-75/US 41 and I-41/US 75.

Just like 78 and 22!
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 04, 2022, 09:07:38 PM
Quote from: paulthemapguy on April 04, 2022, 09:04:56 PM
Quote from: SkyPesos on April 04, 2022, 12:44:52 PM
Quote from: jmacswimmer on October 06, 2021, 11:40:28 AM
Quote from: SkyPesos on October 06, 2021, 11:32:25 AM
^ I've always thought I-29/I-49 as a better I-45 than actual I-45 itself.

Agreed - and then I-45 could be a better I-41 than actual I-41!  :-D
[/fictional]
Didn't know how I skipped over this post initially, but if that is the case, that would make two 41 and 75 Interstate/Parallel US Route pairs: I-75/US 41 and I-41/US 75.

Just like 78 and 22!
Also 70 and 40!
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on April 05, 2022, 06:24:55 AM
Quote from: ethanhopkin14 on April 04, 2022, 12:37:21 PM
US-191 is an original route but has nothing in common today with it's original route.
I don't know if it's the only one, but still pretty unusual. 

This is also true of US 601
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on April 05, 2022, 08:28:25 AM
Well, AFAIK US 191 has a section of its original route in West Yellowstone (and unofficially to Madison Campground), but it is now reversed (what was originally North is now South and vice-versa), and for a time it wasn't part of US 191. US 601, on the other hand, has none of its original route remaining.
Title: Re: Random facts about interstates and US routes
Post by: Max Rockatansky on April 05, 2022, 10:30:20 AM
Quote from: CNGL-Leudimin on April 05, 2022, 08:28:25 AM
Well, AFAIK US 191 has a section of its original route in West Yellowstone (and unofficially to Madison Campground), but it is now reversed (what was originally North is now South and vice-versa), and for a time it wasn't part of US 191. US 601, on the other hand, has none of its original route remaining.

Even weirder, US 191 in the western part of Yellowstone National Park is actually signed:

https://www.gribblenation.org/2021/11/us-route-191-in-gallatin-range-of.html?m=1
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on April 05, 2022, 10:36:17 AM
On the subject of US-191, how many 3dus are longer than their parent?  In US-191's case, comically longer that it is now a border to border highway. 
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 05, 2022, 10:38:58 AM
Quote from: ethanhopkin14 on April 05, 2022, 10:36:17 AM
On the subject of US-191, how many 3dus are longer than their parent?  In US-191's case, comically longer that it is now a border to border highway.
Three of the x21s (221, 321, 421) are longer than US 21. 421 is long enough that it probably could've been US 37, and 231 as US 39, but that's fictional.

Title: Re: Random facts about interstates and US routes
Post by: US 89 on April 05, 2022, 12:39:00 PM
Quote from: ethanhopkin14 on April 05, 2022, 10:36:17 AM
On the subject of US-191, how many 3dus are longer than their parent?  In US-191's case, comically longer that it is now a border to border highway. 

US 278 is longer than US 78.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on April 05, 2022, 12:54:25 PM
Quote from: ethanhopkin14 on April 05, 2022, 10:36:17 AM
On the subject of US-191, how many 3dus are longer than their parent?  In US-191's case, comically longer that it is now a border to border highway.

US491 is also longer than US91.
Title: Re: Random facts about interstates and US routes
Post by: MATraveler128 on April 05, 2022, 12:54:56 PM
US 202 is longer than the eastern US 2.
Title: Re: Random facts about interstates and US routes
Post by: jlam on April 05, 2022, 01:09:51 PM
US 281 is longer than US 81
US 180 is longer than US 80
Title: Re: Random facts about interstates and US routes
Post by: kphoger on April 05, 2022, 01:11:13 PM
Someone correct me if I'm wrong, but...

US-21 – 393 miles
US-221 – 734 miles
US-321 – 526 miles
US-421 – 941 miles

US-78 – 715 miles
US-278 – 1077 miles

US-80 – 1032 miles
US-180 – 1127 miles

US-81 – 1234 miles
US-281 – 1872 miles

US-91 – 163 miles
US-191 – 1657 miles
US-491 – 198 miles
Title: Re: Random facts about interstates and US routes
Post by: jlam on April 05, 2022, 01:23:44 PM
US 166 is longer than current US 66.
US 199 is longer than current US 99.
US 400 is longer than current US 0.
:sombrero:

Are there any 3di that are longer than their respective 2di?
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on April 05, 2022, 01:32:02 PM
Quote from: jlam on April 05, 2022, 01:23:44 PM
US 166 is longer than current US 66.
US 199 is longer than current US 99.
US 400 is longer than current US 0.
:sombrero:

Are there any 3di that are longer than their respective 2di?

I am praying for Interstate 297.
Title: Re: Random facts about interstates and US routes
Post by: JayhawkCO on April 05, 2022, 01:41:34 PM
Quote from: jlam on April 05, 2022, 01:23:44 PM
Are there any 3di that are longer than their respective 2di?

In a state, sure, but otherwise, no.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 08, 2022, 06:18:11 PM
Illinois has 3 interstate-interstate concurrencies in roughly the same mileposts

I-55/72: between MM 92-98 on I-55
I-57/70: between MM 92-98 on I-70, though exit numbers use I-57's mileposts (157-163)
I-57/64: between MM 92-96 on I-57

And although much longer than the other three, part of the I-90/94 concurrency also falls in the MM 92-98 range for I-90.
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on April 09, 2022, 04:10:13 PM
Now that US 491 has been mentioned, it has never connected to US 91, either directly or indirectly. It connects to US 191, but it only came into existence long after US 191 ceased to intersect US 91.
Title: Re: Random facts about interstates and US routes
Post by: Some one on April 13, 2022, 01:34:02 PM
Quote from: jlam on April 05, 2022, 01:23:44 PM
US 166 is longer than current US 66.
US 199 is longer than current US 99.
US 400 is longer than current US 0.
:sombrero:

Are there any 3di that are longer than their respective 2di?
I-238  :-D
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 15, 2022, 07:24:25 PM
List of all interstate concurrencies for each 2di with one or more, and the ones that they keep and lose exit number continuity in. If two interstates start at mile 0 at the same point in a state, and both of them continues the mileage after the concurrency instead of resetting to 0 (like I-20/59 AL or I-55/64 MO), it's neither a win nor loss for either interstate.

I-5: Keep 10
I-10: Lose 5, 35
I-15: Keep 80,84,90
I-20: Lose 59 (MS)
I-24: Keep 69. Lose 40, 65
I-26: Lose 240
I-29: Keep 435. lose 35 (mile resets to its own north of concurrency).
I-35: Keep 10, 410, 40, 44, 29. Lose 70 (2A starts at where I-70 enters, so this whole loop can be considered as I-70's exit numbers), 80, 94 (E)
I-39: Lose 90 (IL and WI)
I-40: Keep 55, 65, 24, 75. Lose 35, 85
I-41: Lose 94, 894
I-43: Lose 894, 94
I-44: Keep 49, 55. Lose 35
I-49: Lose 44
I-55: Keep 70, 72, 74. Lose 20, 40, 44, 64 (MO)
I-57: Keep 64, 70
I-59: Keep 20 (MS)
I-64: Keep 55 (MO). Lose 57, 75, 77, 81, 95
I-65: Keep 24, 70. Lose 40
I-69: Lose 37, 55, 24, 465 (future), 96, 94
I-70: Keep 35, 71, 79. Lose 55, 57, 65, 76. Special case: uses I-270's mileage in most of IL.
I-71: Lose 75, 70
I-72: Lose 55
I-73: Keep 74
I-74: Keep 280, Lose 55, 465, 275, 73
I-75: Keep 85, 64, 71. Lose 40
I-76: Keep 77, 70
I-77: Keep 64. Lose 76, 81
I-79: Lose 70
I-80: Keep 580, 35, 94 (IL), 95. Lose 15, 94 (IN), 90 (IN)
I-81: Keep 77, 64, 86
I-83: Lose 695
I-84: Keep 380. Lose 15
I-85: Keep 40. Lose 75
I-86: Lose 81
I-87: Keep 287
I-90: Keep 94 (WI), 39 (WI and IL), 80 (IN). Lose 15, 94 (IL)
I-94: Keep 35E, 43, 41, 90 (IL), 80 (IN), 69. Lose 90 (WI), 80 (IN)
I-95: Keep 64, 495 (VA). Lose 80
I-96: Keep 69
Title: Re: Random facts about interstates and US routes
Post by: vdeane on April 15, 2022, 08:17:03 PM
I-95 doesn't have a concurrency with I-80.  I-80 ends at I-95 and the exit numbers there are based on the mileage from I-95's originally planned route in NJ (note that this section was also originally under NJDOT jurisdiction before being transferred to NJTA).  The numbers even continue south of I-80 (https://www.google.com/maps/@40.8597828,-74.0119368,3a,32.7y,195.9h,92.85t/data=!3m6!1e1!3m4!1scnWrjEUx7X9fCM-zfUnMcw!2e0!7i16384!8i8192).
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 15, 2022, 08:21:36 PM
Quote from: vdeane on April 15, 2022, 08:17:03 PM
I-95 doesn't have a concurrency with I-80.  I-80 ends at I-95 and the exit numbers there are based on the mileage from I-95's originally planned route in NJ (note that this section was also originally under NJDOT jurisdiction before being transferred to NJTA).  The numbers even continue south of I-80 (https://www.google.com/maps/@40.8597828,-74.0119368,3a,32.7y,195.9h,92.85t/data=!3m6!1e1!3m4!1scnWrjEUx7X9fCM-zfUnMcw!2e0!7i16384!8i8192).
I thought I-95 was using a continuation of I-80's mileage between the NJ Turnpike and the GWB east of the latter's terminus. Forgot to mention that in the other post, but I thought it was interesting that one interstate is continuing another interstate's mileage and exit numbers past a terminus, like how I-70 continues I-270's mileposts in IL.
Title: Re: Random facts about interstates and US routes
Post by: kurumi on April 15, 2022, 10:01:47 PM
The "roundest" 3-digit interstate, in terms of prime factors, is Interstate 384. It's 2^7 * 3. All other existing 3di's have prime factors larger than 3.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 15, 2022, 10:05:07 PM
Quote from: kurumi on April 15, 2022, 10:01:47 PM
The "roundest" 3-digit interstate, in terms of prime factors, is Interstate 384. It's 2^7 * 3. All other existing 3di's have prime factors larger than 3.
We need I-128, I-256 or I-512 for only prime factors of 2 now. 128 is easy, allow MassDOT to pull an I-238 with MA 128?
Title: Re: Random facts about interstates and US routes
Post by: Evan_Th on April 16, 2022, 01:47:39 AM
Quote from: SkyPesos on April 15, 2022, 07:24:25 PM
List of all interstate concurrencies for each 2di with one or more, and the ones that they keep and lose exit number continuity in. If two interstates start at mile 0 at the same point in a state, and both of them continues the mileage after the concurrency instead of resetting to 0 (like I-20/59 AL or I-55/64 MO), it's neither a win nor loss for either interstate.
Great list!

I thought of constructing a ranking of all interstates from this, but then I realized that can't be consistently done.  40 outranks 55, which outranks 70, which outranks 35, which outranks 40 again.
Title: Re: Random facts about interstates and US routes
Post by: SEWIGuy on April 16, 2022, 10:37:30 AM
Quote from: SkyPesos on April 15, 2022, 07:24:25 PM
List of all interstate concurrencies for each 2di with one or more, and the ones that they keep and lose exit number continuity in. If two interstates start at mile 0 at the same point in a state, and both of them continues the mileage after the concurrency instead of resetting to 0 (like I-20/59 AL or I-55/64 MO), it's neither a win nor loss for either interstate.

I-5: Keep 10
I-10: Lose 5, 35
I-15: Keep 80,84,90
I-20: Lose 59 (MS)
I-24: Keep 69. Lose 40, 65
I-26: Lose 240
I-29: Keep 435. lose 35 (mile resets to its own north of concurrency).
I-35: Keep 10, 410, 40, 44, 29. Lose 70 (2A starts at where I-70 enters, so this whole loop can be considered as I-70's exit numbers), 80, 94 (E)
I-39: Lose 90 (IL and WI)
I-40: Keep 55, 65, 24, 75. Lose 35, 85
I-41: Lose 94, 894
I-43: Lose 894, 94
I-44: Keep 49, 55. Lose 35
I-49: Lose 44
I-55: Keep 70, 72, 74. Lose 20, 40, 44, 64 (MO)
I-57: Keep 64, 70
I-59: Keep 20 (MS)
I-64: Keep 55 (MO). Lose 57, 75, 77, 81, 95
I-65: Keep 24, 70. Lose 40
I-69: Lose 37, 55, 24, 465 (future), 96, 94
I-70: Keep 35, 71, 79. Lose 55, 57, 65, 76. Special case: uses I-270's mileage in most of IL.
I-71: Lose 75, 70
I-72: Lose 55
I-73: Keep 74
I-74: Keep 280, Lose 55, 465, 275, 73
I-75: Keep 85, 64, 71. Lose 40
I-76: Keep 77, 70
I-77: Keep 64. Lose 76, 81
I-79: Lose 70
I-80: Keep 580, 35, 94 (IL), 95. Lose 15, 94 (IN), 90 (IN)
I-81: Keep 77, 64, 86
I-83: Lose 695
I-84: Keep 380. Lose 15
I-85: Keep 40. Lose 75
I-86: Lose 81
I-87: Keep 287
I-90: Keep 94 (WI), 39 (WI and IL), 80 (IN). Lose 15, 94 (IL)
I-94: Keep 35E, 43, 41, 90 (IL), 80 (IN), 69. Lose 90 (WI), 80 (IN)
I-95: Keep 64, 495 (VA). Lose 80
I-96: Keep 69


I-39 doesn't use its mileage at all for exit numbers.  For the section north of I-90/94, I believe it still uses US-51's mileage, which is about five miles more than I-39's.  This includes the portion of I-39 that never was part of US-51 around Portage.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on February 25, 2023, 08:12:23 PM
Longest N-S interstate that each E-W interstate doesn't meet:

Ones that are I-95:
I-2, 8, 12, 14, 22, 24, 30, 44, 66, 68, 70, 72, 82, 84, 86, 88, 94, 96

Ones that are another N-S interstate:
I-4: I-35
I-10: I-81
I-16: I-35
I-20: I-15
I-26: I-75
I-40: I-5
I-42 (Future): I-75
I-64: I-35
I-74: I-35
I-76: I-75
I-78: I-75
I-80: I-85
I-90: I-85
Title: Re: Random facts about interstates and US routes
Post by: ethanhopkin14 on February 27, 2023, 11:16:34 AM
Quote from: Evan_Th on April 16, 2022, 01:47:39 AM
Quote from: SkyPesos on April 15, 2022, 07:24:25 PM
List of all interstate concurrencies for each 2di with one or more, and the ones that they keep and lose exit number continuity in. If two interstates start at mile 0 at the same point in a state, and both of them continues the mileage after the concurrency instead of resetting to 0 (like I-20/59 AL or I-55/64 MO), it's neither a win nor loss for either interstate.
Great list!

I thought of constructing a ranking of all interstates from this, but then I realized that can't be consistently done.  40 outranks 55, which outranks 70, which outranks 35, which outranks 40 again.

You could rank them like the in the BCS days.  You take the number of concurrencies and you "rank" their strength of schedule and wins.  I-X0 and I-X5 are your best teams in the power conferences, the rest of the 2dis would be your middle of the road power conference teams (like Perdue or Illinois is to the Big 10) and 3dis would be your small conference teams.  Of course there is some wiggle room.  For example, I-94 is more like Wisconsin; every once in a while, they compete to win the Big 10 or actually might make it into the college football playoff. Another example would be I-476; it's a mid-major team but due to its length, it actually has an argument for playing in the college football playoff, like Cincinatti was a few years ago.
Title: Re: Random facts about interstates and US routes
Post by: Bickendan on February 27, 2023, 05:00:16 PM
Quote from: kurumi on April 15, 2022, 10:01:47 PM
The "roundest" 3-digit interstate, in terms of prime factors, is Interstate 384. It's 2^7 * 3. All other existing 3di's have prime factors larger than 3.
Better to write it as 27-3, or it can read as 221...
Title: Re: Random facts about interstates and US routes
Post by: paulthemapguy on March 29, 2023, 11:54:37 AM
Quote from: kurumi on April 15, 2022, 10:01:47 PM
The "roundest" 3-digit interstate, in terms of prime factors, is Interstate 384. It's 2^7 * 3. All other existing 3di's have prime factors larger than 3.

Cool, so I'm not the only one who thinks about numbers this way!
It's the Interstate highway with the MOST composite number!
I wonder what the US Highway is with the most composite number? 360 or something?
Title: Re: Random facts about interstates and US routes
Post by: pderocco on April 01, 2023, 12:34:44 AM
Quote from: paulthemapguy on March 29, 2023, 11:54:37 AM
Quote from: kurumi on April 15, 2022, 10:01:47 PM
The "roundest" 3-digit interstate, in terms of prime factors, is Interstate 384. It's 2^7 * 3. All other existing 3di's have prime factors larger than 3.

Cool, so I'm not the only one who thinks about numbers this way!
It's the Interstate highway with the MOST composite number!
I wonder what the US Highway is with the most composite number? 360 or something?

I-640 also has eight factors, 2*2*2*2*2*2*2*5.

How about this? The roads with the most different prime factors are I-210 (2*3*5*7), I-390 (2*3*5*13), I-510 (2*3*5*17), I-630 (2*3^2*5*7), I-690 (2*3*5*23), I-780 (2^2*3*5*13), I-840 (2^3*3*5*7), I-910 (2*5*7*13), and I-990 (2*3^3*5*11). There are none with five, because the smallest possible one (2*3*5*7*11) doesn't fit into three digits.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 01, 2023, 12:25:35 PM
Quote from: pderocco on April 01, 2023, 12:34:44 AM
How about this? The roads with the most different prime factors are I-210 (2*3*5*7), I-390 (2*3*5*13), I-510 (2*3*5*17), I-630 (2*3^2*5*7), I-690 (2*3*5*23), I-780 (2^2*3*5*13), I-840 (2^3*3*5*7), I-910 (2*5*7*13), and I-990 (2*3^3*5*11). There are none with five, because the smallest possible one (2*3*5*7*11) doesn't fit into three digits.
Also, two of them with 4 different prime factors that currently don't exist: I-570 (2*3*5*19) and I-870 (2*3*5*29) are under the same parent interstate, and both have been proposed as a number for a freeway in the past.
Title: Re: Random facts about interstates and US routes
Post by: CtrlAltDel on April 01, 2023, 12:49:01 PM
Going oppositely, what is the highest prime Interstate?
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on April 01, 2023, 12:52:08 PM
Quote from: CtrlAltDel on April 01, 2023, 12:49:01 PM
Going oppositely, what is the highest prime Interstate?
I-787
Title: Re: Random facts about interstates and US routes
Post by: CNGL-Leudimin on April 01, 2023, 02:31:45 PM
With the exception of I-2 (being the only even prime it's also the only prime 2di to go East-West) any prime interstates must either go North-South (2di) or branch off a North-South 2di (3di)

For US Routes is simpler: any prime US Routes, with the exception of both instances of US 2, must run North-South.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on April 01, 2023, 03:44:20 PM
Quote from: CNGL-Leudimin on April 01, 2023, 02:31:45 PM
With the exception of I-2 (being the only even prime it's also the only prime 2di to go East-West) any prime interstates must either go North-South (2di) or branch off a North-South 2di (3di)

For US Routes is simpler: any prime US Routes, with the exception of both instances of US 2, must run North-South.

US 211 says hello.

A few other former routes did this too:
original US 163
original US 401
US 421's initial routing 1930-32
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on September 13, 2023, 08:46:47 AM
Interstates that don't use their own mile markers/exit numbers through the majority of their route through a state:

I-70 IL: Shares mile markers with I-55 for its first 20 miles, then continues I-270's mile markers and exit numbers east of the I-55 split, resulting in mile markers about 4-5 miles lower than what it should be

I-80 IN: Shares mile markers with I-94 for its first 16 miles, then uses I-90/ITR's mile markers east of the I-94 split. Note how I-80 in Indiana doesn't even have its own Wiki article due to being entirely concurrent with other interstates in the state.
Title: Re: Random facts about interstates and US routes
Post by: pianocello on September 13, 2023, 10:52:43 PM
Quote from: SkyPesos on September 13, 2023, 08:46:47 AM
Interstates that don't use their own mile markers/exit numbers through the majority of their route through a state:

I-80 IN: Shares mile markers with I-94 for its first 16 miles, then uses I-90/ITR's mile markers east of the I-94 split. Note how I-80 in Indiana doesn't even have its own Wiki article due to being entirely concurrent with other interstates in the state.

To be fair it's overlapped with I-90 the whole way east of the split, so one of the two routes was always going to be using the others' mileage.

Other examples include I-41 in Wisconsin, which uses the mileage for US 45 from I-94 northward, and then continues it up to Green Bay and beyond. When the freeway was built in Milwaukee, it was solely US 45, but when the freeway was extended it made the most sense to continue the mileage all the way north.

I-39 in Wisconsin has a similar situation, it uses US 51's mileage north of Portage because that was there first.
Title: Re: Random facts about interstates and US routes
Post by: SkyPesos on November 12, 2023, 09:20:43 PM
Interstates with 200+ miles pass their final interchange with an x0 or x5 (Let me know if I missed any):

InterstateDirectionLast x0 or x5 JunctionDistance past that junction (miles)
70E75469
75S10467
75N80/90412
29N90386
95N90370
95S10352
15N90266
49N40263
35/35EN90246
91N90221

If I-69 in TX gets finished, it would be about 350 miles south of I-10 to the Mexico border via the 69E branch.
Title: Re: Random facts about interstates and US routes
Post by: Mapmikey on November 13, 2023, 07:13:58 AM
Quote from: SkyPesos on November 12, 2023, 09:20:43 PM
Interstates with 200+ miles pass their final interchange with an x0 or x5 (Let me know if I missed any):

InterstateDirectionLast x0 or x5 JunctionDistance past that junction (miles)
70E75469
75S10467
75N80/90412
29N90386
95N90370
95S10352
15N90266
49N40263
35/35EN90246
91N90221

If I-69 in TX gets finished, it would be about 350 miles south of I-10 to the Mexico border via the 69E branch.

I-22, 202 miles from I-65 to I-269
eastern I-84 is 230 miles from I-90 to I-81
eastern I-86 will also meet this criteria