U.S. Routes that enter and leave a state concurrent with different interstates

[corco]

For instance, U.S. 50 enters Missouri on I-255 and leaves it on I-435. Any others?

[Brandon]

US-6 enters Illinois on I-80/94 and leaves on I-74.

[Mapmikey]

US 40 enters IL with I-64 and leaves on I-70

US 85 (such as it exists) enters NM with I-10 and leaves on I-25

US 87 enters WY with I-25 and leaves with I-90

[GaryV]

Nothing for Michigan, because what enters Michigan stays in Michigan - at least as far as US and Interstate routes.

[TravelingBethelite]

U.S. 6 enters Iowa on I-74 and leaves it on I-480.

[jp the roadgeek]

No real examples anywhere in the Northeast.  1 and 9 on the GW (NY/NJ) and 30 (NJ/PA) on the Ben Franklin are the only examples of a US route crossing a state line on an interstate, but all cross independently at the other border (1 NY/CT and NJ/PA; 30 PA/OH; 9 NJ/DE),  end at the ocean (US 30 NJ) or Canada (US 9 NY).  US 202 does enter CT from NY duplexed with US 6 and leaves CT for MA duplexed with CT/MA 10.

[JCinSummerfield]

Nothing for Michigan, because what enters Michigan stays in Michigan - at least as far as US and Interstate routes.

Except US-2.    Wait - no.    Wait - yes.

[bulldog1979]

Nothing for Michigan, because what enters Michigan stays in Michigan - at least as far as US and Interstate routes.

Except US-2.    Wait - no.    Wait - yes.

And US 141.

[dvferyance]

US 24 enters Kansas on I-70 from Colorado and leaves it into Missouri on I-70. Though does it have to be a different interstate? Or is this just concurrent with an interstate on both ends of the state?

[bassoon1986]

A near miss. US 77 enters Texas with I-35 from Oklahoma. It crosses from Brownsville, Texas to Mexico with US 83, but leaves the I-69E designation behind by a few blocks.

[Avalanchez71]

Tennessee only has single hook ups.

US 31 & I-65 down in Ardmore, TN/Ardmore, AL.
US 61/70/79 (formerly US 63) & I-55 in Memphis.
US 412 & I-155 in Dyer County across the Mississippi River to Dyersburg.

Future I-69 and US 51 over at South Fulton, TN

[jeffandnicole]

No real examples anywhere in the Northeast.  1 and 9 on the GW (NY/NJ) and 30 (NJ/PA) on the Ben Franklin are the only examples of a US route crossing a state line on an interstate, but all cross independently at the other border (1 NY/CT and NJ/PA; 30 PA/OH; 9 NJ/DE),  end at the ocean (US 30 NJ) or Canada (US 9 NY).  US 202 does enter CT from NY duplexed with US 6 and leaves CT for MA duplexed with CT/MA 10.

US 40 crosses the Del. Mem. Bridge with I-295 as well.

[kphoger]

does it have to be a different interstate?

Topic = U.S. Routes that enter and leave a state concurrent with different interstates. 

[paulthemapguy]

U.S. 6 enters Iowa on I-74 and leaves it on I-480.

As a continuation of this earlier post, US6 enters Illinois on I-74 and leaves on I-80/94 

mis-

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NO SYNTAX ERRORS
NO ERROR IN FACT
IDENTIFIED REDUNDANCY
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C:\>_

My apologies.

[hotdogPi]

U.S. 6 enters Iowa on I-74 and leaves it on I-480.

As a continuation of this earlier post, US6 enters Illinois on I-74 and leaves on I-80/94 

See reply #1

[bzakharin]

No real examples anywhere in the Northeast.  1 and 9 on the GW (NY/NJ) and 30 (NJ/PA) on the Ben Franklin are the only examples of a US route crossing a state line on an interstate, but all cross independently at the other border (1 NY/CT and NJ/PA; 30 PA/OH; 9 NJ/DE),  end at the ocean (US 30 NJ) or Canada (US 9 NY).  US 202 does enter CT from NY duplexed with US 6 and leaves CT for MA duplexed with CT/MA 10.

US 40 crosses from Delaware to NJ concurrent with I-295. Of course no multiplexes on the other side. Or is that not Northeast?
Also, US 46 comes close. It used to cross from NJ into PA with I-80 (I think) and ends at the NJ/NY state line concurrent with I-95.

[amroad17]

Removed mine also.

[FrCorySticha]

I know this is more likely looking for existing US routes, but historic US 10 entered Montana from North Dakota on I-94 and left into Idaho on I-90.

[dvferyance]

does it have to be a different interstate?

Topic = U.S. Routes that enter and leave a state concurrent with different interstates. 

I found one today that falls into that category. US 40 enters Missouri from Kansas on I-70 then it leaves Missouri for Illinois on I-55/64. This one now counts since the rerouting of I-70 onto the Stan Musical bridge.

[kphoger]

does it have to be a different interstate?

Topic = U.S. Routes that enter and leave a state concurrent with different interstates. 

I found one today that falls into that category. US 40 enters Missouri from Kansas on I-70 then it leaves Missouri for Illinois on I-55/64. This one now counts since the rerouting of I-70 onto the Stan Musical bridge.

Good catch!  This one is really wacky, though.  It is now apparently impossible to take US-40 from Missouri to Illinois.  Here me out...

If you get off I-70/US-40 at the Stan Span, then you're following I-70 but deviating from US-40.  However, US-40's logical path at the I-64 interchange does not exist:  there is no exit from I-44/US-40 to I-64/US-40 in that direction of travel.

So perhaps we should reword your post to say...
Westbound, US-40 enters Missouri from Illinois on I-64, then enters Kansas on I-70.  Eastbound, US-40 enters Missouri from Kansas on I-70 but never leaves.     ???

[corco]

Fortunately, US-40 actually just stays concurrent with I-64 until it hits I-70 in O'Fallon.

[kphoger]

Fortunately, US-40 actually just stays concurrent with I-64 until it hits I-70 in O'Fallon.

Huh?  US-50 does...  (And old highway 50 in O'Fallon is called just plain "Highway 50," which makes navigating there for the first time fun...

[Super Mateo]

Fortunately, US-40 actually just stays concurrent with I-64 until it hits I-70 in O'Fallon.

Huh?  US-50 does...  (And old highway 50 in O'Fallon is called just plain "Highway 50," which makes navigating there for the first time fun...

I think it might be O'Fallon, MO corco was talking about.  I don't think US 40 is concurrent with I-44 at any point, is it?  Last time I was in that area, US 40 was concurrent with I-64, at least from the IL border to a good distance west beyond US 67.

[corco]

Fortunately, US-40 actually just stays concurrent with I-64 until it hits I-70 in O'Fallon.

Huh?  US-50 does...  (And old highway 50 in O'Fallon is called just plain "Highway 50," which makes navigating there for the first time fun...

I think it might be O'Fallon, MO corco was talking about.  I don't think US 40 is concurrent with I-44 at any point, is it?  Last time I was in that area, US 40 was concurrent with I-64, at least from the IL border to a good distance west beyond US 67.

Yes - O'Fallon Missouri. US-40 runs concurrent with I-64 from the bridge to I-70 in O'Fallon, Missouri.

[kphoger]

Fortunately, US-40 actually just stays concurrent with I-64 until it hits I-70 in O'Fallon.

Huh?  US-50 does...  (And old highway 50 in O'Fallon is called just plain "Highway 50," which makes navigating there for the first time fun...

I think it might be O'Fallon, MO corco was talking about.  I don't think US 40 is concurrent with I-44 at any point, is it?  Last time I was in that area, US 40 was concurrent with I-64, at least from the IL border to a good distance west beyond US 67.

Yes - O'Fallon Missouri. US-40 runs concurrent with I-64 from the bridge to I-70 in O'Fallon, Missouri.

Aw, geez.  How did I miss THAT??