Like a I-x0/x0, or I-x5/x5, or I-x0/x5 or US x1/x1, you get the idea
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
I-70/I-76 between New Stanton and Breezewood on the Pennsylvania Turnpike. Sorry if someone else was gonna say that.
Not a whole lot of them for Interstates. This list may be exhaustive:
-I-90/I-15 in Butte
-I-15/I-80 in Salt Lake City
-I-70/I-35 in Kansas City
-I-10/I-45 in Houston
-I-10/I-35 in San Antonio
-35/40 in Oklahoma City
-I-20/I-55 in Jackson
-40/55 in Memphis
-55/70 in St Louis
-40/65 in Nashville
-40/75 in Knoxville
-I-75/I-85 in Atlanta
-I-80/90 in Indiana and Ohio
-40/85 in North Carolina
-65/70 in Indianapolis
Quote from: epzik8 on August 23, 2017, 04:48:40 PM
I-70/I-76 between New Stanton and Breezewood on the Pennsylvania Turnpike. Sorry if someone else was gonna say that.
I think they meant the 0s and 5s, but I hesitate to call I-45 "major".
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
US 11 & US 41 form a wrong way concurrency in the Chattanooga area. And what's up with this crazy ass US 41 directional banner??
https://goo.gl/maps/PudofxH71HC2
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the
real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd
almost put 57 on the list; but in reality it functions more as a "55E".
Given all that, concurrencies of 35 & 44, 44 & 55, 55 & 64, 64 & 75, 64 & 81, 64 & 95, 29 & 35, 29 & 80, 20 & 59, 90 & 94 (multiple), 15 & 84, and -- later on -- 44 & 49, would fill out this collection.
Just think of it as a paraphrase of the immortal words of Jessica Rabbit:
"I'm a non-quintile divisible Interstate -- I'm not bad, I was just drawn this way!"
Quote from: sparker on August 23, 2017, 06:46:54 PM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd almost put 57 on the list; but in reality it functions more as a "55E".
Given all that, concurrencies of 35 & 44, 44 & 55, 55 & 64, 64 & 75, 64 & 81, 64 & 95, 29 & 35, 29 & 80, 20 & 59, 90 & 94 (multiple), 15 & 84, and -- later on -- 44 & 49, would fill out this collection.
Just think of it as a paraphrase of the immortal words of Jessica Rabbit: "I'm a non-quintile divisible Interstate -- I'm not bad, I was just drawn this way!"
I'd probably put I-24 on your travel corridor list, also, but not sure if I call it North/South or East/West...
And one could argue that I-64 and I-44 could be unified under a single number -- I think I've seen that argument around these parts before. I-60 or I-50 would be appropriate, I think, but it violates the (old) Interstate and US route duplication rule/guideline
That being said, some more concurrencies...mostly IL-centric:
US 51 in IL...Is concurrent with:
US 60, crossing the Ohio near Cairo, IL
US 50, in Sandoval, IL
US 40, in Vandalia, IL
I-55, around Bloomington/Normal, IL
US 20, around southern Rockford until Cherry Valley, IL
I-90, near Cherry Valley, IL, around Rockford, to the Wisconsin border
As an aside, US 51 crosses US 30 in IL also, but neither the I-39/US 51 freeway nor Old US 51/current IL 251 run concurrent with US 30
Others I can think of, across the state of IL:
US 20 and US 41 on the South Side of Chicago, leading to Gary, IN
US 40 and I-70 crossing the Wabash River on the IL/IN border, near Terre Haute, IN, and between Pocahontas and Highland, IL, and then joining I-55/I-70 heading towards the Mississippi River and STL
In the nearby category:
US 41 joins I-80 (and I-94) just across the border from IL in NW IN, between Calumet Ave and Indianapolis Blvd
US 31 and US 20, around South Bend, IN
US 41 and US 50 (and US 150) around Vincennes, IN
US 61 and I-55, near Cape Girardeau, MO
US 50 and US 61 in STL
US 40 and US 61 (and I-64) west of STL into Wentzville
US 61 joins I-80 in the Quad Cities/Davenport, IA area
And of course, in Indy, US 31 and US 40 are concurrent on I-465, somewhere...
Quote from: sparker on August 23, 2017, 06:46:54 PM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd almost put 57 on the list; but in reality it functions more as a "55E".
Given all that, concurrencies of 35 & 44, 44 & 55, 55 & 64, 64 & 75, 64 & 81, 64 & 95, 29 & 35, 29 & 80, 20 & 59, 90 & 94 (multiple), 15 & 84, and -- later on -- 44 & 49, would fill out this collection.
Just think of it as a paraphrase of the immortal words of Jessica Rabbit: "I'm a non-quintile divisible Interstate -- I'm not bad, I was just drawn this way!"
Is New York's I-87 really a main route? Sure, it has high traffic counts but that measure is pretty biased towards a place like New York City. I-87's high traffic volumes are on the Thruway section that connects New York and Albany. North of Albany and it's pretty desolate.
I'm not ready to call a road that generates most of its traffic by connecting New York's largest city with its capital a "main route." In my opinion, no intrastate interstate highway can be a "main route."
Quote from: The Nature Boy on August 23, 2017, 07:10:46 PM
Quote from: sparker on August 23, 2017, 06:46:54 PM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd almost put 57 on the list; but in reality it functions more as a "55E".
Given all that, concurrencies of 35 & 44, 44 & 55, 55 & 64, 64 & 75, 64 & 81, 64 & 95, 29 & 35, 29 & 80, 20 & 59, 90 & 94 (multiple), 15 & 84, and -- later on -- 44 & 49, would fill out this collection.
Just think of it as a paraphrase of the immortal words of Jessica Rabbit: "I'm a non-quintile divisible Interstate -- I'm not bad, I was just drawn this way!"
Is New York's I-87 really a main route? Sure, it has high traffic counts but that measure is pretty biased towards a place like New York City. I-87's high traffic volumes are on the Thruway section that connects New York and Albany. North of Albany and it's pretty desolate.
I'm not ready to call a road that generates most of its traffic by connecting New York's largest city with its capital a "main route." In my opinion, no intrastate interstate highway can be a "main route."
It connects the 2nd and 8th largest cities in North America and provides part of the New York City truck bypass. If it weren't for the international border, it would be a continuous designation. I'd say I-87 warrants "main route" more than I-45 or I-30. And if you're going to bring traffic counts into this, the least-trafficked 2DI is I-95 in Maine. Just sayin'.
Quote from: cl94 on August 23, 2017, 08:02:26 PM
Quote from: The Nature Boy on August 23, 2017, 07:10:46 PM
Quote from: sparker on August 23, 2017, 06:46:54 PM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd almost put 57 on the list; but in reality it functions more as a "55E".
Given all that, concurrencies of 35 & 44, 44 & 55, 55 & 64, 64 & 75, 64 & 81, 64 & 95, 29 & 35, 29 & 80, 20 & 59, 90 & 94 (multiple), 15 & 84, and -- later on -- 44 & 49, would fill out this collection.
Just think of it as a paraphrase of the immortal words of Jessica Rabbit: "I'm a non-quintile divisible Interstate -- I'm not bad, I was just drawn this way!"
Is New York's I-87 really a main route? Sure, it has high traffic counts but that measure is pretty biased towards a place like New York City. I-87's high traffic volumes are on the Thruway section that connects New York and Albany. North of Albany and it's pretty desolate.
I'm not ready to call a road that generates most of its traffic by connecting New York's largest city with its capital a "main route." In my opinion, no intrastate interstate highway can be a "main route."
It connects the 2nd and 8th largest cities in North America and provides part of the New York City truck bypass. If it weren't for the international border, it would be a continuous designation. I'd say I-87 warrants "main route" more than I-45 or I-30. And if you're going to bring traffic counts into this, the least-trafficked 2DI is I-95 in Maine. Just sayin'.
I didn't bring traffic counts into this, I just refuted why we shouldn't use traffic counts for the exact reason that you just said.
Quote from: plain on August 23, 2017, 06:36:48 PM
US 11 & US 41 form a wrong way concurrency in the Chattanooga area. And what's up with this crazy ass US 41 directional banner??
https://goo.gl/maps/PudofxH71HC2
This is very common in Tennessee...
Quote from: Mapmikey on August 23, 2017, 08:53:13 PM
Quote from: plain on August 23, 2017, 06:36:48 PM
US 11 & US 41 form a wrong way concurrency in the Chattanooga area. And what's up with this crazy ass US 41 directional banner??
https://goo.gl/maps/PudofxH71HC2
This is very common in Tennessee...
I didn't know that. My experience in Tennessee (well non-interstate anyway) is mostly Memphis & Chattanooga. I remember seeing bi-directional arrows but not the N-S or E-W
Quote from: cl94 on August 23, 2017, 05:03:34 PM
Not a whole lot of them for Interstates. This list may be exhaustive:
You did miss I-35/80 here in the Des Moines metro.
Someone beat me to US 11 and US 41 in Chattanooga, but there's a short concurrency of US 11 and US 21 in Wytheville, Va.
Also, US 31 and US 41 in Nashville. Add bonus, US 31A and US 41A.
US 60 and US 21 had a historical one between Chimney Corner and Charleston in WV. US 60 has concurrencies with US 31E, US 31W, Alternate US 41 and US 51 in Kentucky.
US 30 and 91 in Pocatello, ID.
Historically, US 91 and 40 in SLC, and US 91 and 50 in central Utah.
Also, do x5's count for major US highways? Routes like 75, 85, and 95 seem pretty important.
Quote from: roadguy2 on August 25, 2017, 01:18:57 AM
US 30 and 91 in Pocatello, ID.
Historically, US 91 and 40 in SLC, and US 91 and 50 in central Utah.
Also, do x5's count for major US highways? Routes like 75, 85, and 95 seem pretty important.
Some US x5's
were quite important -- but only in regards to particular segments. 5 was important as the major N-S "inland" route in New England. 25 was pretty important north of Greenville, SC (at least to Detroit). 45 from Fulton, KY north to Kankakee, IL was important as well, as was 65 north of Des Moines. 75 was important from its historical southern terminus at Galveston north to Tulsa, a bit less important from Tulsa to Sioux City, and secondary north from there. 85 was a bit bifurcated -- quite important from El Paso to Denver, less so north of there. 95 had one important stretch: Las Vegas to (historically) US 30 in SW Idaho; the rest was only locally useful -- except for its northernmost section from Coeur d'Alene north to the Canadian border. Nationally, 15 & 35 didn't really register, although from its multiplex with US 11 north to (historically) Rochester 15 had some regional significance. And until Ohio elected to improve 35, it was really no more than a regional anomaly.
There's the current version of the US 20/US 71 concurrency in the Early and Sac City area of Iowa, as opposed to the original version which went through Early. There's also the US 30/US 71 concurrency near DeWitt.
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
And as I stated in other thread, any route that is either just a ramp, unsigned or concurrent with other route is useless for me. So I-80 is totally useless in IN, as it is just a ramp when alone. I would end I-80 at I-294 in IL, and make the section East of Elyria OH into an Eastern I-82 :bigass:. Another option would be rerouting I-80 into the planned Illiana, along US 30, and I-71 and I-76 back to its present route, but that is fictional terrain.
Quote from: CNGL-Leudimin on August 26, 2017, 05:44:07 AM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
And as I stated in other thread, any route that is either just a ramp, unsigned or concurrent with other route is useless for me. So I-80 is totally useless in IN, as it is just a ramp when alone. I would end I-80 at I-294 in IL, and make the section East of Elyria OH into an Eastern I-82 :bigass:. Another option would be rerouting I-80 into the planned Illiana, along US 30, and I-71 and I-76 back to its present route, but that is fictional terrain.
Fictional, yes, but a lot of US 30 east of Fort Worth is already Interstate-grade or close to it. Carry on...
I-55/I-70 from East St Louis to I-270 in Illinois.
Quote from: cl94 on August 26, 2017, 01:28:50 PM
Quote from: CNGL-Leudimin on August 26, 2017, 05:44:07 AM
Quote from: ilpt4u on August 23, 2017, 06:19:11 PM
Not quite - I-80 is alone on the ramps between the Indiana Toll Road and the Borman Expressway
And as I stated in other thread, any route that is either just a ramp, unsigned or concurrent with other route is useless for me. So I-80 is totally useless in IN, as it is just a ramp when alone. I would end I-80 at I-294 in IL, and make the section East of Elyria OH into an Eastern I-82 :bigass:. Another option would be rerouting I-80 into the planned Illiana, along US 30, and I-71 and I-76 back to its present route, but that is fictional terrain.
Fictional, yes, but a lot of US 30 east of Fort Worth is already Interstate-grade or close to it. Carry on...
Fort Wayne, maybe?
Funnily coincidental that I-30 is (more or less) interstate grade east of Fort Worth.
Just thought of a former one: I-95 and US 1 across the Potomac River. Also, wasn't US 1 & US 60 concurrent across the James River at one point?
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
And I-80 splits from those overlaps on both sides. East of Cleveland and west of Chicago I-80 is by itself so is it suppose to be like I-76, I-84 and I-88 and have a gap in the middle of its route?
I-75/85 in Atlanta.
I-80/90 from about 40 miles west of Cleveland to Lake Station, Indiana.
Those are the only two that come to mind right now.
Quote from: Flint1979 on September 21, 2017, 05:25:01 PM
Quote from: CNGL-Leudimin on August 23, 2017, 04:48:32 PM
I-80 and I-90 through half of OH and almost all of IN. In fact I-80 is useless in IN, as it overlaps other interstates all the way through the state.
And I-80 splits from those overlaps on both sides. East of Cleveland and west of Chicago I-80 is by itself so is it suppose to be like I-76, I-84 and I-88 and have a gap in the middle of its route?
76, 84, 86, and 88 are numbers that have two different, unrelated Interstates associated with them. Western I-76 and eastern I-76 are separate, not different parts of the same route with a gap, and the same is true with 84, 86, and 88. I don't consider the new I-87 in North Carolina legitimate, but it would be the same with that.
I-49 and I-69
do have gaps, as does I-74 within North Carolina. I-74 between Ohio and North Carolina is debatable.
About I-80: I-80 is signed just as well as I-90 is when they are overlapped. There is no gap. You could ask the same about I-90 instead of I-80.
Quote from: Flint1979 on September 21, 2017, 05:26:42 PM
I-75/85 in Atlanta.
I-80/90 from about 40 miles west of Cleveland to Lake Station, Indiana.
Those are the only two that come to mind right now.
Both are already mentioned in Reply #3.
Though brief, I-5 and I-10 have a (somewhat poorly signed) concurrency along the portion of the Golden State Freeway in East Los Angeles south of where historic US 99 split off to follow the San Bernardino Freeway.
Quote from: TheStranger on September 22, 2017, 07:44:11 PM
Though brief, I-5 and I-10 have a (somewhat poorly signed) concurrency along the portion of the Golden State Freeway in East Los Angeles south of where historic US 99 split off to follow the San Bernardino Freeway.
I think I-10 ends and begains at the 2 sides of the concourrency.
US routes that come to mind:
US-11 and US-70 in Knoxville, also 11, 25 and 70
US-31W and US-60 in Louisville
US-11 and US-80 in west Alabama leading to Meridian, MS
(Yes, I know that most, if not all of these have been supplanted by Interstate highways...)
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
The way I see it is that US 191 should be US 91 not a three digit. US 180 I believe is about 60 miles longer than US 80 and doesn't even meet up with US 80 anymore. US 191 no longer meets up with US 91 either. This has happened a lot with US highways though.
There are even a few that are orphaned: US 138, US 166, US 266 and US 199. The first one is the most notable case, as US 38 was killed by US 6 early in the history of US routes, but US 138 remains to this day.
Back on topic, a historical one: US 60 and US 70 between Globe AZ (current US 70's Western terminus) and Beaumont CA IIRC. There was even a concurrency of US 60, US 70 and US 80 (and US 89 as well, but that doesn't end in 1) into Phoenix, of which only US 60 remains.
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
Quote from: Roadgeekteen on September 23, 2017, 02:44:17 PM
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
clarify... do you define a main road by route length? Number of lanes?
Quote from: roadiejay on September 23, 2017, 03:54:06 PM
clarify... do you define a main road by route length? Number of lanes?
Based on the OP,
Quote from: fillup420 on August 23, 2017, 04:42:23 PM
Like a I-x0/x0, or I-x5/x5, or I-x0/x5 or US x1/x1, you get the idea
he seems to consider I-x0, I-x5, US x0, or US x1 (2-digit only) as "main", plus (possibly) US 2 and (definitely) US 101, as these were the ones intended to be major. It is unclear if mixing one Interstate with one US route is allowed or not.
Quote from: roadiejay on September 23, 2017, 03:54:06 PM
Quote from: Roadgeekteen on September 23, 2017, 02:44:17 PM
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
clarify... do you define a main road by route length? Number of lanes?
Based on the route number.
Quote from: Flint1979 on September 23, 2017, 06:02:03 PM
Quote from: roadiejay on September 23, 2017, 03:54:06 PM
Quote from: Roadgeekteen on September 23, 2017, 02:44:17 PM
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
clarify... do you define a main road by route length? Number of lanes?
Based on the route number.
This.
Roadgeekteen may not know this, but when the US highway system was developed, the major coast-to-coast or border-to-border (or in some cases, not quite but close enough) routes ended in 0 (even) or 1 (odd). US 101 was considered to be a major route despite having three digits.
When the Interstate system was designed, the major routes were designated as ending in 5 for north-south routes and 0 for east-west routes.
Quote from: hbelkins on September 23, 2017, 06:52:16 PM
Quote from: Flint1979 on September 23, 2017, 06:02:03 PM
Quote from: roadiejay on September 23, 2017, 03:54:06 PM
Quote from: Roadgeekteen on September 23, 2017, 02:44:17 PM
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
clarify... do you define a main road by route length? Number of lanes?
Based on the route number.
This.
Roadgeekteen may not know this, but when the US highway system was developed, the major coast-to-coast or border-to-border (or in some cases, not quite but close enough) routes ended in 0 (even) or 1 (odd). US 101 was considered to be a major route despite having three digits.
When the Interstate system was designed, the major routes were designated as ending in 5 for north-south routes and 0 for east-west routes.
Right. US 101 is treated as a two digit route.
SAMSUNG-SM-J727A
Quote from: Roadgeekteen on September 22, 2017, 11:21:21 PM
Quote from: TheStranger on September 22, 2017, 07:44:11 PM
Though brief, I-5 and I-10 have a (somewhat poorly signed) concurrency along the portion of the Golden State Freeway in East Los Angeles south of where historic US 99 split off to follow the San Bernardino Freeway.
I think I-10 ends and begains at the 2 sides of the concourrency.
California legislative route definitions don't really have any bearing on how an Interstate is defined by FHWA (especially since there is that not-quite-I-10 segment of the San Bernardino Freeway, which is officially part of the California definition of Route 10, between US 101 and I-5...originally built as US 60/70/99).
Quote from: Flint1979 on September 23, 2017, 07:24:14 PM
Quote from: hbelkins on September 23, 2017, 06:52:16 PM
Quote from: Flint1979 on September 23, 2017, 06:02:03 PM
Quote from: roadiejay on September 23, 2017, 03:54:06 PM
Quote from: Roadgeekteen on September 23, 2017, 02:44:17 PM
Quote from: roadiejay on September 23, 2017, 12:39:58 AM
US 180 and US 191 run concurrent for 55 miles from Alpine, AZ to St. Johns, AZ.
They're both 3di, but if memory serves, both significantly longer than their "parent" routes.
They are not main roads.
clarify... do you define a main road by route length? Number of lanes?
Based on the route number.
This.
Roadgeekteen may not know this, but when the US highway system was developed, the major coast-to-coast or border-to-border (or in some cases, not quite but close enough) routes ended in 0 (even) or 1 (odd). US 101 was considered to be a major route despite having three digits.
When the Interstate system was designed, the major routes were designated as ending in 5 for north-south routes and 0 for east-west routes.
Right. US 101 is treated as a two digit route.
SAMSUNG-SM-J727A
So.....
101 is 3di but gets a pass due to length.
191, spanning from Mexico to Canada, doesn't count...
180, which runs from greater Fort Worth to the grand canyon, also doesn't count...
Cool.
US 101 doesn't get a pass because of it's length it get's a pass because it's a main US highway and the north-south main US highways all end in a 1. There already was a US 99 so that number couldn't be used anyway. They could have used US 91 instead of US 101 but then they would lose four valuable highway numbers (93, 95, 97 and 99). AASHTO made an exception to its two-digit rule. Thus, US 101 is treated as a primary, two-digit route with a "first digit" of 10, rather than a spur of US 1, which is located along the east coast, on the opposite side of the U.S. Thus US 101, not US 99, is the westernmost north-south route in the U.S. Highway System.
US 101 gets its pass due to position, not length.
As for US 191, remember that the portion south of I-40 used to be US 666, long before the section north of Gallup was renumbered to 491.
Historically US 51 and US 61 were routed together from LaPlace into downtown New Orleans at their southern termini.
iPhone
US 1 and US 2 have a concurrency through Houlton, ME (https://www.google.com/maps/@46.1242536,-67.8397953,3a,75y,254.7h,87.33t/data=!3m7!1e1!3m5!1snGDW7f3RcTAPEOjGyNfpVg!2e0!6s%2F%2Fgeo3.ggpht.com%2Fcbk%3Fpanoid%3DnGDW7f3RcTAPEOjGyNfpVg%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D224.51247%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656) (US 2 is generally considered to be major). US 1 is also concurrent with US 50 in Washington, DC and US 90 in Jacksonville, FL.
Staying with US 1, US 1 has concurrencies with I-95 south of Boston and across the GW Bridge.
Quote from: sparker on August 23, 2017, 06:46:54 PM
If one were to depart from the idiom of nothing but "0" and "5" Interstates as "main" routes and used traffic and connectivity as criteria, it would be safe to say that the following routes could be considered "main": for N-S routes, 29, 59, 81, and 87 (the real one in NY, not the pretender down south); for E-W routes, 44, 64, the western 84, and 94 (funny how the 4's take up the slack for the 0's). 49 will certainly join the list when complete -- and possibly 69 well into the future. Because of truck traffic, I'd almost put 57 on the list; but in reality it functions more as a "55E".
Going by that list, I-77 could certainly be added to it. That was originally promoted as the Great Lakes to Florida Highway. It indeed does that, with its connections to I-26 and I-95 and I-79. Connects Cleveland, Pittsburgh and Erie and Buffalo to Florida. In and of itself it is 613 miles long, and serves Columbia SC, Charlotte NC, Charleston WV, Akron OH and Cleveland.
Quote from: cl94 on September 24, 2017, 06:41:16 PMStaying with US 1, US 1 has concurrencies with I-95 south of Boston and across the GW Bridge.
Those aren't the only locations where US 1 is concurrent w/I-95.
Did anyone mention I-20 & 59 through MS and AL?
Also the infamous US 1 & 9 in NJ that NJDOT gave it single shield like it is one route rather than two separate US routes as it really. It is a main route not by long distance as I-95 and the NJ Turnpike take that title, but regionally the one and nine is important as it serves many cities like Rahway, Linden, Elizabeth, Newark, and Jersey City and used heavily by trucks delivering along the Chemical Coast and all the industrial plants along the Arthur Kill.
Quote from: roadman65 on September 27, 2017, 12:53:19 PM
Did anyone mention I-20 & 59 through MS and AL?
Also the infamous US 1 & 9 in NJ that NJDOT gave it single shield like it is one route rather than two separate US routes as it really. It is a main route not by long distance as I-95 and the NJ Turnpike take that title, but regionally the one and nine is important as it serves many cities like Rahway, Linden, Elizabeth, Newark, and Jersey City and used heavily by trucks delivering along the Chemical Coast and all the industrial plants along the Arthur Kill.
How are you defining "main route" to include I-59?
I would consider I-90/I-94 both in Wisconsin and Chicago to be a main route concurrencies even though I-94 does not end in zero it's still quite major being the longest non zero interstate.
US 101 is not a child of US 1. I think of it as being US "ten-one," with 10 the the tens digit place. It's an extra-wide two-digit number. It doesn't make actual sense, but it maybe doesn't make sense less than having the most distant parent-child association possible doesn't. I've thought about the idea of "US 101-ing" the Interstate system, with I-105 running along the East Coast (not to get fictional, but just proportionately nonsensical).
Quote from: 1 on September 27, 2017, 01:16:34 PM
Quote from: roadman65 on September 27, 2017, 12:53:19 PM
Did anyone mention I-20 & 59 through MS and AL?
Also the infamous US 1 & 9 in NJ that NJDOT gave it single shield like it is one route rather than two separate US routes as it really. It is a main route not by long distance as I-95 and the NJ Turnpike take that title, but regionally the one and nine is important as it serves many cities like Rahway, Linden, Elizabeth, Newark, and Jersey City and used heavily by trucks delivering along the Chemical Coast and all the industrial plants along the Arthur Kill.
How are you defining "main route" to include I-59?
It is a 2di, which can be considered as main.