This is the official thread for any random trivial musings you have about highways. Post any kind of neat fact you know about a highway in this thread.
I'll start:
Did you know: I-90 is the only interstate to have both its termini with non-Interstates.
Quote from: njroadhorse on June 18, 2009, 06:25:30 PM
Did you know: I-90 is the only interstate to have both its termini with non-Interstates.
Before the direct connection to the PA Turnpike (I-76) at Morgantown was made, I-176 had two non-interstate termini. The Morgantown end stopped at PA 10/23 and the northern end still stops at US 422.
And, until the new interchange is made to I-80 near Bellfonte, I-99 doesn't directly connect to another interstate. (I know this is a nitpick!) Though, before the new section was opened north of Bald Eagle, it definitely was in the same category as I-90!
And, what about I-95? It ends at US 1 south of Miami on the south end and it reaches the Canadian border where it becomes NB 95. NB 95 may be a freeway, but it's certainly not an interstate.
Quote from: njroadhorse on June 18, 2009, 06:25:30 PM
Did you know: I-90 is the only interstate to have both its termini with non-Interstates.
What about I-75? It's northern terminus is at the International Bridge in Sault St. Marie, and it's southern terminus is at FL-826.
The believe the longest spur route is I-395 in Eastern Connecticut. 54 miles plus.
Although should it be renumbered, it technically turns into I-290 at the Mass Pike, shouldn't it be renumbered I-895 or I-290? It really is a connector to the Mass Pike, I-90 from I-95.
Also, CT was the first state to complete it's section of I-95 in 1958.
Yeah, let's move on from the "both termini at non-Interstates", because there are far too many. (I-585) How about: 2Y is the highest-lettered exit in the country... but H is the highest-lettered exit without a number! 2Y is in Kansas City as many know... who knows where the H is?
Quote from: doofy103 on June 18, 2009, 09:00:35 PM
The believe the longest spur route is I-395 in Eastern Connecticut. 54 miles plus.
Although should it be renumbered, it technically turns into I-290 at the Mass Pike, shouldn't it be renumbered I-895 or I-290? It really is a connector to the Mass Pike, I-90 from I-95.
I hate to rain on your parade but I-135 in KS is 95.74 miles long according to the AARoads interstate guide. And, I don't even know if that is the longest odd prefixed 3di.
And, while it's numbered as a loop route, I-476 in PA essentially functions as a very long spur while it's the Northeast Extension of the PA Turnpike. Total length of I-476 is 129.61 miles according to http://www.kurumi.com/roads/3di/ (http://www.kurumi.com/roads/3di/)
The longest exit less stretches of Interstate 10 east of West Texas are a 20 mile stretch between U.S. 441 and U.S. 90 through Osceola National Forest in Florida and the 18 mile stretch between Alabama Exit 53 (CR 64) and Florida Exit 5 (U.S. 90 Alternate).
The Pennsylvania Turnpike boast one of the longest stretches between exits in the east. It is 36 miles between the Somerset (Exit 110) and Bedford (Exit 146) exits.
There are a pair of service plaza on this stretch but they are only a few miles east of the Somerset exit.
The most notable feature of this stretch of highway is the Allegheny Tunnel.
-I-476 is indeed the longest auxiliary interstate. Best part is, that road is only about a 1/2 mile away from my house :biggrin:
-I-878 is the shortest interstate even though its unsigned.
-I-375 in Detroit is the shortest signed interstate.
-Not only is I-97 the shortest two-digit intrastate interstate, but it is also the only two-digit intracounty interstate which means its only in one county, Anne Arundel.
-The only known '61 spec interstate shield in New Hampshire, is an I-89 shield off of exit 2 (NH 13) on I-89.
-Alaska, Arizona and New Mexico are the only states with out auxiliary interstates.
Ian
there is an I-93 still remaining ... '61 spec. Dunno where it is, but someone sent me a recent picture of it!
VA 35 continues NW of US 301 and I-95 to end at SR 605/SR 622 less than a mile NW of US 301 and its even posted with an END sign.
Quote from: AlpsROADS on June 18, 2009, 09:26:23 PMH is the highest-lettered exit without a number! 2Y is in Kansas City as many know... who knows where the H is?
I will guess Atlantic City, NJ since they are pretty hardcore on the lettered exits.
Quote from: mightyace on June 18, 2009, 09:47:53 PM
Quote from: doofy103 on June 18, 2009, 09:00:35 PM
The believe the longest spur route is I-395 in Eastern Connecticut. 54 miles plus.
Although should it be renumbered, it technically turns into I-290 at the Mass Pike, shouldn't it be renumbered I-895 or I-290? It really is a connector to the Mass Pike, I-90 from I-95.
I hate to rain on your parade but I-135 in KS is 95.74 miles long according to the AARoads interstate guide. And, I don't even know if that is the longest odd prefixed 3di.
And, while it's numbered as a loop route, I-476 in PA essentially functions as a very long spur while it's the Northeast Extension of the PA Turnpike. Total length of I-476 is 129.61 miles according to http://www.kurumi.com/roads/3di/ (http://www.kurumi.com/roads/3di/)
Yeah, and I-196 is 80 miles long. There are several spurs longer than I-395.
Quote from: agentsteel53 on June 18, 2009, 11:11:08 PM
there is an I-93 still remaining ... '61 spec. Dunno where it is, but someone sent me a recent picture of it!
Whoa for real???? Someone tell me where it is! I am heading up to New Hampshire today actually.
Ian
I do not know where it is. Ask Steve Alpert. The shield is this one:
www.aaroads.com/shields/show.php?image=NH19610933t100930.jpg (//www.aaroads.com/shields/show.php?image=NH19610933t100930.jpg)
that photo is from 1992. The photo from 2009 shows it still there, alive and well.
Would it be safe to say that the I-275/Cincinnati Bypass is the only interstate to:
-- Go the shortest distance through a state from border to border(Indiana).
-- Have just a single exit in one state (again, Indiana).
Also, I-271 & I-480 are the only two 3dis to Multiplex with each other.
Quote from: thenetwork on June 19, 2009, 09:27:38 AM
-- Have just a single exit in one state (again, Indiana).
If you don't count the terminus trumpet itself, then, currently, I-86 has only one exit in PA. Once it's extended east of Elmira to Binghamton there will be another one where I-86 dips back into PA. (Though I believe it will still be maintained by NY)
Quote
Also, I-271 & I-480 are the only two 3dis to Multiplex with each other.
While officially correct (because, on paper, the routes have been switched & do not multiplex) it will be interesting to see how long the Parkway West in Pittsburgh has both I-376 signs AND I-279 shields still hanging around.
Quote from: thenetwork on June 19, 2009, 09:27:38 AM
Would it be safe to say that the I-275/Cincinnati Bypass is the only interstate to:
-- Go the shortest distance through a state from border to border(Indiana).
Mileage figures are again courtery of AARoad's http://www.interstate-guide.com (http://www.interstate-guide.com)
I-275 in Indiana is 3.16 miles.
I-684 in Connecticut is 1.41 miles. However, there are no exits on I-684 through CT.
Just call me "Mythbuster." :no: :poke: :sombrero:
0.11 miles where the tip of DC goes over the WWB, don't think there is any stretch of Interstate shorter within one jurisdiction.
Quote from: froggie on June 19, 2009, 10:35:48 AM
QuoteWould it be safe to say that the I-275/Cincinnati Bypass is the only interstate to:
-- Go the shortest distance through a state from border to border(Indiana).
Depends how you would define I-95 in DC...
Or how you define DC since it's not actually a state.
Parts of I-10 and I-20 in Western Texas and I-15 between I-70 and Salt Lake City have the highest speed limits in the United States at 80 Mph.
Quote from: agentsteel53 on June 19, 2009, 09:06:07 AM
I do not know where it is. Ask Steve Alpert. The shield is this one:
www.aaroads.com/shields/show.php?image=NH19610933t100930.jpg (//www.aaroads.com/shields/show.php?image=NH19610933t100930.jpg)
that photo is from 1992. The photo from 2009 shows it still there, alive and well.
I dont' want to reveal too much on this forum. All I'll say is, drive both directions on a certain east-west route near a certain 3-digit Interstate spur. In the middle of the referenced city, you will find it pointing down a certain other east-west route.
I've made a map indicating the approximate midpoints of some multi-state two digit interstates:
http://maps.google.com/maps/ms?hl=en&ie=UTF8&msa=0&msid=117499567522166489363.00046caea572232c09da1&ll=39.095963,-94.042969&spn=29.269306,60.732422&z=4 (http://maps.google.com/maps/ms?hl=en&ie=UTF8&msa=0&msid=117499567522166489363.00046caea572232c09da1&ll=39.095963,-94.042969&spn=29.269306,60.732422&z=4)
Note that this map will include a few inaccuracies from the Federal mileage log. I-64 is particularly affected by this since the Federal log has the west end around I-270.
Quote from: Mr_Northside on June 19, 2009, 09:44:20 AM
Quote from: thenetwork on June 19, 2009, 09:27:38 AM
-- Have just a single exit in one state (again, Indiana).
I did not know of the I-684 designation. However, I knew there would be debate on I-86. Granted, the New York stretch of I-86 does dip into PA for one exit, but I-86 does go into PA a second time (on the western terminus) and adds additional exits.
When I-86 is (ever) complete in NY, it could be considered the only Interstate to enter a single state more than twice, no???
they've raised it in Utah as well?
last time I was there, I went from 15 to 70, and didn't see anything. I'd imagine that the area south of 70, down to about St. George, would be eligible for the higher limit too ... pretty abandoned stretch going in both directions from 70.
oh and 70 itself should be eligible for speed limit 80. There are a few winding mountain sections, but it's a very lightly traveled road.
not a re-entry into a state, but I-8 crosses between San Diego and Imperial Counties about five times. The county border is a straight line drawn over a mountain range ... the freeway is somewhat more winding.
Quote from: Hellfighter on June 18, 2009, 08:11:24 PM
Quote from: njroadhorse on June 18, 2009, 06:25:30 PM
Did you know: I-90 is the only interstate to have both its termini with non-Interstates.
What about I-75? It's northern terminus is at the International Bridge in Sault St. Marie, and it's southern terminus is at FL-826.
Barring interstates that hit borders. I forgot to mention that. By that rationale, I-75 is eliminated. Anyway, I-90 is almost 2000 miles longer than I-75.
Quote from: njroadhorseAnyway, I-90 is almost 2000 miles longer than I-75.
Actually only 1234 miles longer; I-75 is 1786 miles long, while I-90 is about 3021 miles long.
Quote from: Mr_NorthsideWhen I-86 is (ever) complete in NY, it could be considered the only Interstate to enter a single state more than twice, no???
I-24 enters Tennessee twice since it briefly dips south into Georgia.
Quote from: agentsteel53 on June 19, 2009, 11:22:02 PM
they've raised it in Utah as well?
last time I was there, I went from 15 to 70, and didn't see anything. I'd imagine that the area south of 70, down to about St. George, would be eligible for the higher limit too ... pretty abandoned stretch going in both directions from 70.
oh and 70 itself should be eligible for speed limit 80. There are a few winding mountain sections, but it's a very lightly traveled road.
Jeff sent us an article on the 80 mph limits in Utah back in January:
http://www.ksl.com/?nid=148&sid=5217103 (http://www.ksl.com/?nid=148&sid=5217103)
The highest exit number in the country is 880 (I-10, Texas).
The highest exit number on a sequentially numbered highway is 100 (I-395, Connecticut, continuing numbers from the CT turnpike).
M-1 Woodward Avenue between 6 and 7 Mile roads in Detroit was the first paved road in the country
US 90 is the only highway in FL to enter two sets of counties twice each in its trek through the state (Holmes/Washington and Leon/Jefferson).
Before I-65 in Nashville was rerouted over the former I-265, the junction on the southeast corner of the inner loop was a rare junction of three 2dis with each leg being multiplexed.
Former alignment:
West leg: I-40, I-65
North leg: I-24, I-65
East leg: I-24, I-40
With I-65 out of the equation, it's just another interchange. Though I still travel north/south on the old I-65 alignment and not the new one. Outside of rush hour, it's faster.
Quote from: Duke87 on June 20, 2009, 02:26:10 PM
The highest exit number on a sequentially numbered highway is 100 (I-395, Connecticut, continuing numbers from the CT turnpike).
When I-86 is completed in NY it will beat this with 131.
Interstate 30 is the shortest two-digit Interstate ending in zero in the Interstate system, with a total length of 367 miles.
Quote from: agentsteel53 on June 18, 2009, 11:27:58 PM
Quote from: AlpsROADS on June 18, 2009, 09:26:23 PMH is the highest-lettered exit without a number! 2Y is in Kansas City as many know... who knows where the H is?
I will guess Atlantic City, NJ since they are pretty hardcore on the lettered exits.
Here, perhaps? (http://www.alpsroads.net/roads/nj/bc/)
The section of expressway that has the longest continually lighted section is I-95 from the NY State line to just east of Branford, CT.
Quote from: Greybear on June 21, 2009, 06:56:07 PM
Interstate 30 is the shortest two-digit Interstate ending in zero in the Interstate system, with a total length of 367 miles.
I-45 is the shortest 2di ending in 5 in the Interstate system, at 285 miles. It is also the only
intrastate x5 route.
There's an approximately 40 mile stretch of I-81 where you can cross three state lines and, hence, be in four states in less than an hour. (Maybe a half-hour if you push it. :wow:)
Starting in Virginia at exit 323, you cross into West Virginia for 26 miles, then you make a 12 mile sojourn through Maryland until you enter Pennsylvania.
Interstate 81 is the longest non-x10 or non-x5 interstate in America.
The longest stretch between exits on an Interstate Highway is located on the I-80 in Utah between Wendover and Knolls, with 37 miles (60 km) between those exits.
Quote from: njroadhorse on June 23, 2009, 09:31:35 AM
Interstate 81 is the longest non-x10 or non-x5 interstate in America.
Are you sure it's not I-94?
Quote from: 74/171FAN on June 23, 2009, 09:34:21 AM
Quote from: njroadhorse on June 23, 2009, 09:31:35 AM
Interstate 81 is the longest non-x10 or non-x5 interstate in America.
Are you sure it's not I-94?
Yup you're right. I-94's the longest, but I-81 is still the longest N-S route of the above criteria.
Quote from: Chris on June 23, 2009, 09:33:34 AM
The longest stretch between exits on an Interstate Highway is located on the I-80 in Utah between Wendover and Knolls, with 37 miles (60 km) between those exits.
That beats I-70/76 on the PA Turnpike between exits 110 and 146 (36 miles) by one mile. (mentioned earlier in this thread)
BTW It would be interesting to know the exact distances between both pairs of exits.
US 59 is the busiest road in Texas with 337,000 AADT just before the I-610 interchange in Houston source (http://www.dot.state.tx.us/apps/statewide_mapping/StatewidePlanningMap.html)
The 405 is the busiest freeway in the United States with an average of 380,000 vehicles per day.
The longest interstate that doesn't cross a state line? I-87. 333.49 miles, all in New York.
The shortest interstate that does? I-535, extending a mere 2.78 miles south out of Duluth, Minnesota into Wisconsin.
The biggest city/metro with no 3-digits? Phoenix, Arizona.
The biggest city with only 2 freeways? Tucson, Arizona
QuoteThe shortest interstate that does? I-535, extending a mere 2.78 miles south out of Duluth, Minnesota into Wisconsin.
At 2.81 miles, I-670 comes in second in KS/MO.
Quote from: Hellfighter on June 23, 2009, 03:39:56 PM
The 405 is the busiest freeway in the United States with an average of 380,000 vehicles per day.
I take it that would be the 405 in Los Angeles, not Portland, Oregon. The actual busiest stretch might be the section between LAX and the San Fernando Valley; there's no such thing as rush hour on that stretch; it's congested (both directions!)from about 6AM to about 8PM or even later.