Highways that are entirely concurrent with another highway in a state

[Road Hog]

I thought somebody said ARDOT took US 63 off I-555 and ran it concurrently with US 49.

[ilpt4u]

I thought somebody said ARDOT took US 63 off I-555 and ran it concurrently with US 49.

Maybe? I was going by the not always accurate Google Maps

[GaryV]

Two in Michigan:

I-194 (Battle Creek) is entirely concurrent with M-66.

BS I-75 (Bay City) is entirely concurrent with M-25.

Does it have to be signed to count?  I-296 (unsigned) is entirely concurrent with US-131.

[wanderer2575]

Two in Michigan:

I-194 (Battle Creek) is entirely concurrent with M-66.

BS I-75 (Bay City) is entirely concurrent with M-25.

Does it have to be signed to count?  I-296 (unsigned) is entirely concurrent with US-131.

Ooh, good one.  Totally slipped my mind.  I think it counts.

[NWI_Irish96]

US 131 is entirely concurrent with IN 13 in Indiana.

[bulldog1979]

Two in Michigan:

I-194 (Battle Creek) is entirely concurrent with M-66.

BS I-75 (Bay City) is entirely concurrent with M-25.

Does it have to be signed to count?  I-296 (unsigned) is entirely concurrent with US-131.

Ooh, good one.  Totally slipped my mind.  I think it counts.

The northern end of I-296 isn't US 131 though.

[sprjus4]

Unsigned I-595 is concurrent with US-50 for its entire length in Maryland.

[Eth]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

[odditude]

The entire length of I-676 in PA is concurrent with US 30.

[sprjus4]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

Similarly, with the exception of the last 3 miles, the entire length of I-985 is concurrent with US-23.

[US 89]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

Similarly, with the exception of the last 3 miles, the entire length of I-985 is concurrent with US-23.

As previously mentioned, all US routes in Georgia are concurrent with a signed state route, but there are also a handful of US routes that are entirely concurrent with the same SR across the whole state. Those are:

- US 11 and SR 58
- US 27 and SR 1
- US 84 and SR 38
- US 123 and SR 365

[fillup420]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

Similarly, with the exception of the last 3 miles, the entire length of I-985 is concurrent with US-23.

As previously mentioned, all US routes in Georgia are concurrent with a signed state route, but there are also a handful of US routes that are entirely concurrent with the same SR across the whole state. Those are:

- US 11 and SR 58
- US 27 and SR 1
- US 84 and SR 38
- US 123 and SR 365

i don't understand why GA does this. it just adds so many more signs that have to be manufactured and installed.

[Roadgeekteen]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

Similarly, with the exception of the last 3 miles, the entire length of I-985 is concurrent with US-23.

As previously mentioned, all US routes in Georgia are concurrent with a signed state route, but there are also a handful of US routes that are entirely concurrent with the same SR across the whole state. Those are:

- US 11 and SR 58
- US 27 and SR 1
- US 84 and SR 38
- US 123 and SR 365

i don't understand why GA does this. it just adds so many more signs that have to be manufactured and installed.

I'm not sure if these routes are signed.

[hotdogPi]

We've already mentioned all the Interstates in Georgia having unsigned state route numbers as well, so I won't go into that, but notably I-575 is also entirely concurrent with a regular signed route, GA 5.

Similarly, with the exception of the last 3 miles, the entire length of I-985 is concurrent with US-23.

As previously mentioned, all US routes in Georgia are concurrent with a signed state route, but there are also a handful of US routes that are entirely concurrent with the same SR across the whole state. Those are:

- US 11 and SR 58
- US 27 and SR 1
- US 84 and SR 38
- US 123 and SR 365

i don't understand why GA does this. it just adds so many more signs that have to be manufactured and installed.

I'm not sure if these routes are signed.

They are. GA's state route duplicates are all signed.

[sprjus4]

They are. GA's state route duplicates are all signed.

Not everywhere. Many places -aren't- signed.

[mgk920]

I-41 and US-41 in Wisconsin

Also in Illinois.

I-41 is entirely dulpexed with I-94 in Illinois, too.

Mike

[Roadgeekteen]

I-41 and US-41 in Wisconsin

Also in Illinois.

I-41 is entirely dulpexed with I-94 in Illinois, too.

Mike

I was about to comment that it ended at the state border, but it actually extends into Illinois for one mile. Why does it even go down there?

[ilpt4u]

I was about to comment that it ended at the state border, but it actually extends into Illinois for one mile. Why does it even go down there?

So its ready for ISTHA to replace I-294 on the Tri-State, someday, a nod to to the nostalgia of the Tri-State's old designation of Toll US 41 /sarcasm

In all seriousness, I think the I-41/US 41 diplex continues until US 41 leaves the Freeway at the 2nd IL exit south of the Cheddar Curtain

[bassoon1986]

In Louisiana US 63 is completely alongside US 167.  Also in Baton Rouge, Business routes US 61 and US 190 are the exact same route.


iPhone

[ipeters61]

Despite Delaware being small, we have quite a few of these:

• US-202 spends 13 miles (of its 20 mile length) multiplexed - 2 miles with DE-141, 11 miles with I-95 (I feel it would make more sense to just truncate it to I-95)
• I-295 spends 4 miles (of its 6 mile length) multiplexed - with US-40 (keep in mind that the Delaware Memorial Bridge sits almost entirely within Delaware's border)
• DE-404 spends 23 miles (of its 35 mile length) multiplexed - 10 miles with DE-18, 13 miles with US-9 (I feel like it would make more sense to just truncate DE-18 to the west end of the DE-18 multiplex, since DE-18 just dies while running along with DE-404)
• Until the opening of the new highway last year, US-301 used to be multiplexed with other routes (DE-15, DE-71, DE-299, DE-896) for almost its entire then-14 mile length through Delaware (excluding a 1 mile segment of Middletown-Warwick Road between DE-71 and DE-299)

[Hwy 61 Revisited]

   
• US-202 spends 13 miles (of its 20 mile length) multiplexed - 2 miles with DE-141, 11 miles with I-95 (I feel it would make more sense to just truncate it to I-95)

Or extend it down DE 202, and then some, to 13.

[DJ Particle]

I-394 in Minnesota is fully concurrent with US-12

Not quite. The last mile from 94 to downtown is solo.

Although in crazy reverse application, it makes me realize 94 is fully concurrent for the entirety of Minnesota. 52 from ND to St. Paul, 12 the rest of the way to Wisconsin.

Yikes!  How did I forget that?

[Roadgeekteen]

I-86 entirely overlaps NY 17. 17 has standalone sections, but it carries all of 86.

Not quite I think. I-86 in PA is only I-86 since PA 17 got decommissioned.

[Hwy 61 Revisited]

I-86 entirely overlaps NY 17. 17 has standalone sections, but it carries all of 86.

Not quite I think. I-86 in PA is only I-86 since PA 17 got decommissioned.

I meant in New York.

[Roadgeekteen]

I-86 entirely overlaps NY 17. 17 has standalone sections, but it carries all of 86.

Not quite I think. I-86 in PA is only I-86 since PA 17 got decommissioned.

I meant in New York.

Oh oops.