What's the shortest distance a highway/interstate spends in a state?

[cpzilliacus]

If we count connected state highways with the same number, the Maryland portion of PA-MD-DE 896 is right at their tripoint and is only about .2 miles long.

Similarly, the eastern part of Virginia's U.S. 340 (Jefferson Pike) crosses the Commonwealth's territory (over the north edge of Loudoun County) for about 0.57 miles between Maryland and West Virginia. 

[vdeane]

| usai       | PA     | I-86   |        | SWa    | South Waverly, PA      | pa.i086swa    |  0.235524 |

What are the supposed limits of I-86 in PA? As far as I know, no extension has yet been enacted that would put I-86 into the South Waverly dip.

If what we have in Travel Mapping isn't accurate for the current extent of I-86, I'll gladly add it to the queue of things needing fixing.  I honestly don't remember why or when we last updated I-86 vs. Future I-86 designations in the then-CHM data.

Well, it might be accurate and I just haven't found out about it yet. I check once in a while, but not exhaustively, so if an extension has been made official I'd be happy to learn about it.

The update of I-86 in CHM was after the Elmira/Chemung at-grade removal project finished and the FHWA allowed NY to sign I-86 throughout the rest of Region 6.

Right, that's sort of how I recall my last inquiry on the subject ending: they got the go-ahead to extend the route, and there's nothing really in the way of doing so, but they just haven't done it yet. Does FHWA's permission amount to an official extension on its own, or does NYSDOT have to take some further step (even if it's just actually putting up signs)?

[empirestate]

Aha! So, does this mean it's been extended to US 220? Or is it signed east from there as well? Or, does the designation still in fact end at the Chemung/Tioga line, and the assembly pictured here has a theoretical "TO" banner that was deemed superfluous?

[vdeane]

Technically, both of those signs should have a TO banner.  I believe the FHWA approval says "Tioga line", without specifying whether it's the line with Chemung County or the line with Pennsylvania, neither of which strikes me as a logical terminus.

[discochris]

MN 23 clips about half a mile of Wisconsin southwest of Duluth, although there are no signs letting you know you're in Wisconsin and there is no access to any other part of the state from MN 23.

That was the first thing that came to mind for me. I find that so weird.

[OracleUsr]

Doesn't US 58 enter TN for a very short distance near the Cumberland Gap Tunnel on US 25E?  Or is it all in VA?

[hbelkins]

It used to be all in Virginia until the Cumberland Gap tunnel was built. Now it does extend into Tennessee.

[mgk920]

Aha! So, does this mean it's been extended to US 220? Or is it signed east from there as well? Or, does the designation still in fact end at the Chemung/Tioga line, and the assembly pictured here has a theoretical "TO" banner that was deemed superfluous?

Isn't I-86 in Pennsylvania for a fairly substantial distance?

Mike

[vdeane]

Not on that section.  This is the interchange where NY 17 dips into PA.  The main segment in PA is 200 miles to the west.

[peterj920]

There is about a 3 mile stretch of US 191 that dips into Wyoming from Montana with no mention of crossing the state line in Yellowstone National Park.

[cl94]

Aha! So, does this mean it's been extended to US 220? Or is it signed east from there as well? Or, does the designation still in fact end at the Chemung/Tioga line, and the assembly pictured here has a theoretical "TO" banner that was deemed superfluous?

Technically, both of those signs should have a TO banner.  I believe the FHWA approval says "Tioga line", without specifying whether it's the line with Chemung County or the line with Pennsylvania, neither of which strikes me as a logical terminus.

It's debatable. Nobody really knows where it ends. For all intents and purposes, it ends at US 220, but there is no "END" marker. It practically is at the Tioga County line, anyway.

[noelbotevera]

It ends at the Tioga-Chemung county line.

[empirestate]

It ends at the Tioga-Bradford county line. So I-86 ends when NY 17 EB re-enters New York/WB exits New York.

Where did you find that out? I've been eager to know the exact current terminus, but an official source seems to be elusive.


iPhone

[noelbotevera]

It ends at the Tioga-Bradford county line. So I-86 ends when NY 17 EB re-enters New York/WB exits New York.

Where did you find that out? I've been eager to know the exact current terminus, but an official source seems to be elusive.


iPhone

https://www.google.com/maps/@41.9998557,-76.5317624,3a,75y,122.54h,90t/data=!3m6!1e1!3m4!1suXwuPaJvFwDHEzisJVFx4A!2e0!7i13312!8i6656

This sign is the end of I-86. Google says that this is still I-86, but once you go past the sign, it switches to NY 17.

http://www.fhwa.dot.gov/planning/economic_development/studies/i86trip2005.cfm

The long arrow where 185 miles is points to is the Chemung/Tioga county line. The FHWA says it ends there...

https://www.fhwa.dot.gov/planning/economic_development/studies/new_york_86/i86ny00.cfm

And some pages say this too. It's a mistake on my part - it looks like it ends at the Chemung/Tioga county line.

[empirestate]

It ends at the Tioga-Bradford county line. So I-86 ends when NY 17 EB re-enters New York/WB exits New York.

Where did you find that out? I've been eager to know the exact current terminus, but an official source seems to be elusive.


iPhone

And some pages say this too. It's a mistake on my part - it looks like it ends at the Chemung/Tioga county line.

Oh, OK. That's what I'd heard most recently, too. I know we have anecdotal evidence (the photo above) that it extends to US 220, but to my knowledge no official action has yet precipitated that.

In fact, recent accounts seem to suggest that extension of I-86 as a designation has fallen off of anyone's agenda.


iPhone

[noelbotevera]

Back on topic, the SB lanes of PA 163 enter Maryland for about 40 or so feet.

https://www.google.com/maps/place/PA-163,+Antrim,+PA/@39.7218498,-77.7290926,17.93z/data=!4m2!3m1!1s0x89c98df56e95c6b7:0x8d60de4189640487

[cappicard]

K-247 just north of Ellis, Kansas (near Hays) is only a few hundred yards long. Goes from 3rd St to the southern end of the interchange with I-70.

https://www.google.com/maps/dir/38.949793,-99.560133/38.9465053,-99.5601791/@38.9490671,-99.5624428,17z/data=!4m2!4m1!3e2?hl=en

[cl94]

NY 103. 1/2 mile. A large amount of unsigned routes in New York are longer.

[empirestate]

NY 103. 1/2 mile. A large amount of unsigned routes in New York are longer.

And at least a few signed highways are shorter...


iPhone

[vdeane]

NY 103. 1/2 mile. A large amount of unsigned routes in New York are longer.

NY 437: 0.3-0.4 miles
NY 419: 1/4 mile

There are also some reference routes that are only a couple hundred feet long (due to how wyes are inventoried)

[mwb1848]

This threat has to acknowledge I-24 in Georgia... which doesn't even acknowledge it's in Georgia!
https://goo.gl/maps/5G4ZUPiyCZo

[cl94]

What are you talking about? If you mean the exit numbers, it's like NY 17's jaunt into Pennsylvania. Makes more sense to continue the sequence than have three sets of numbers within a couple miles?