Which state has the most impressive "concurrency resume"?

[thspfc]

Very random question, but which state boasts the most impressive/absurd (depending on how you look at it) concurrency resume? I nominate Wisconsin.
Basics:
- Longest concurrency is I-41 and US-41 at 176 miles, but I know people will complain about that so otherwise it's I-39 and US-51 at 103 miles, but I know people will complain about that so otherwise it's I-90 and I-94 at 91 miles.
- The most routes concurrent at one time is four (I think), which occurs at the following locations:
I-41/I-894/US-41/US-45 in Milwaukee
I-41/I-43/I-894/US-41 in Milwaukee
I-39/US-10/US-51/WI-66 in Stevens Point
US-12/US-14/US-18/US-151 in Madison
Longest concurrency of more than two routes is I-41/I-94/US-41 at 32 miles, but that's utterly stupid so next is I-39/I-90/I-94 at 29 miles.
Other facts:
- Two instances of three Interstates running concurrently (I-39/90/94 and I-41/43/894). I believe the rest of the country combined doesn't have any examples of that anymore (now that I-70 was rerouted in St. Louis).
- One instance of four US Routes running concurrently (US-12/14/18/151 in Madison). I'm assuming that exists in a few other places (I-465 in Indianapolis possibly?).
- Three instances of an Interstate, US Route, and State Route running concurrently (I-94/US-12/WI-35 in Hudson, I-39/US-51/WI-23 in Marquette County, and I-39/US-10/US-51/WI-66 in Stevens Point). I'm assuming that many other states have at least one instance of this, even without cheating by having all Interstates/US Routes also be state routes (you know who you are, Georgia  )
- Two instances of three different directions being signed on the same road (I-41/I-43/I-894/US-41 in Milwaukee and I-39/US-10/US-51/WI-66 in Stevens Point).
- Two routes with the same number technically run concurrently for 176 miles (I-41 and US-41, though US-41 isn't always signed).

[ilpt4u]

The only real concurrency oddity I've noted in Illinois is the fact that US 51, as it journeys from Cairo to South Beloit, ends up have concurrencies on 6 different Interstates across the Prairie State, 2 of which are concurrencies with 2 interstates at once. From the south heading north, concurrent with I-57, I-72, I-74, I-55, I-39, I-90

Well, the other one is self-inflicted in Illinois, the stupidity of IL 110, and even of IL 336, now that the Macomb-Peoria segment is pretty-much, at best, on life-support, if not all-out dead

I-39 is fully concurrent state-wide, almost entirely with US 51, and for the last few hundred feet south of the Cheddar Curtain, I-39 is not concurrent with US 51, but still concurrent with I-90 heading into Wisconsin

[US 89]

Georgia has a signed state route concurrent with every mile of US highway, and unsigned state routes concurrent with every interstate. Plus a lot of random state route concurrencies that would probably be separate routes in a lot of other states.

There's the 8-way concurrency in Athens between SR 10 Loop, US 29, US 78, US 129, US 441, SR 8, SR 15, and unsigned SR 422.

[hotdogPi]

Maine gets a whole bunch of concurrencies. ME 100 and US 202 are both almost entirely overlapped.

[Flint1979]

For Michigan it'd be I-75 and US-23 for 73 miles.
US-41 and M-28 for about 56 miles.

[ilpt4u]

- One instance of four US Routes running concurrently (US-12/14/18/151 in Madison). I'm assuming that exists in a few other places (I-465 in Indianapolis possibly?)

Indy has 5 US routes concurrent together along 465: US 31/36/40/52/421, between exits 46&47 on the east side

One of Indiana's other well known concurrency quirks, aside from the Indy/465 situation: I-80, other than the ramp between the Indiana Toll Road and the Borman Expressway, is completely concurrent with either I-90 (mostly) or I-94 (the rest)

[corco]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

[3467]

Illinois 110 is in concurrency it's entire length in 2 states and is a Quadplex sound Monmouth. Agree 336 is useless now. Macomb Peoria is Illinois 9 to funded 4 lane 24 . They could do another concurrency.

[ilpt4u]

Illinois 110 is in concurrency it's entire length in 2 states and is a Quadplex sound Monmouth. Agree 336 is useless now. Macomb Peoria is Illinois 9 to funded 4 lane 24 . They could do another concurrency.

There are segments where IL 110/336 are the only two signed routes. Since the CKC was a big deal when it was announced, and since 336 between Macomb and the unsigned 336 segment at I-474 in Peoria is basically dead, yeah go ahead and decommission 336

[Eth]

Georgia has a signed state route concurrent with every mile of US highway, and unsigned state routes concurrent with every interstate. Plus a lot of random state route concurrencies that would probably be separate routes in a lot of other states.

There's the 8-way concurrency in Athens between SR 10 Loop, US 29, US 78, US 129, US 441, SR 8, SR 15, and unsigned SR 422.

Is Georgia the only state with two separate 4-way US route concurrencies? In addition to that one in Athens, US 29 and 78 also pick up US 23 and 278 in Atlanta.

[rarnold]

Cimarron County, Oklahoma has only 2 highways that aren't concurrent with another (OK 171 and OK 325). The rest, US Highways 56, 64, 287, 385, 412, and OK 3 are all concurrent with another highway, in may cases multiple highways. It is quite a feat for a county with less than 2500 people and bigger than the state of Rhode Island.

[michravera]

Very random question, but which state boasts the most impressive/absurd (depending on how you look at it) concurrency resume? I nominate Wisconsin.
Basics:
- Longest concurrency is I-41 and US-41 at 176 miles, but I know people will complain about that so otherwise it's I-39 and US-51 at 103 miles, but I know people will complain about that so otherwise it's I-90 and I-94 at 91 miles.
- The most routes concurrent at one time is four (I think), which occurs at the following locations:
I-41/I-894/US-41/US-45 in Milwaukee
I-41/I-43/I-894/US-41 in Milwaukee
I-39/US-10/US-51/WI-66 in Stevens Point
US-12/US-14/US-18/US-151 in Madison
Longest concurrency of more than two routes is I-41/I-94/US-41 at 32 miles, but that's utterly stupid so next is I-39/I-90/I-94 at 29 miles.
Other facts:
- Two instances of three Interstates running concurrently (I-39/90/94 and I-41/43/894). I believe the rest of the country combined doesn't have any examples of that anymore (now that I-70 was rerouted in St. Louis).
- One instance of four US Routes running concurrently (US-12/14/18/151 in Madison). I'm assuming that exists in a few other places (I-465 in Indianapolis possibly?).
- Three instances of an Interstate, US Route, and State Route running concurrently (I-94/US-12/WI-35 in Hudson, I-39/US-51/WI-23 in Marquette County, and I-39/US-10/US-51/WI-66 in Stevens Point). I'm assuming that many other states have at least one instance of this, even without cheating by having all Interstates/US Routes also be state routes (you know who you are, Georgia  )
- Two instances of three different directions being signed on the same road (I-41/I-43/I-894/US-41 in Milwaukee and I-39/US-10/US-51/WI-66 in Stevens Point).
- Two routes with the same number technically run concurrently for 176 miles (I-41 and US-41, though US-41 isn't always signed).

To the contrary, California barely posts concurrencies at all. I am only aware of the I-580/I-80 "Wrong Way" concurrency, one exit (not sure it's posted) of US-101 and CASR-152, and a few miles of US-101/CASR-156 in northern California. The routes that would benefit from it the most, CASR-99 and I-305/US-50 and I-5, and likewise with CASR-16 don't do it at all. There may be posted concurrencies of US-50 and CASR-89 and I-80 can CASR-267 in order to run through agricultural inspection, but I am not sure that anything is clearly posted (and it's usually just for one or two exits or intersections). I also believe that there is a posted concurrency of CASRs 35 and 92 (possibly with I-280, but I doubt it).

I'm sure that I've missed one or two, but California is very much a "post one route" state.

[Roadgeekteen]

North Carolina has the 2 74s.

[mgk920]

Also US 10/WI 22/WI 49/WI 54 (it's in Waupaca, WI).

Mike

[US 89]

Georgia has a signed state route concurrent with every mile of US highway, and unsigned state routes concurrent with every interstate. Plus a lot of random state route concurrencies that would probably be separate routes in a lot of other states.

There's the 8-way concurrency in Athens between SR 10 Loop, US 29, US 78, US 129, US 441, SR 8, SR 15, and unsigned SR 422.

Is Georgia the only state with two separate 4-way US route concurrencies? In addition to that one in Athens, US 29 and 78 also pick up US 23 and 278 in Atlanta.

Also can't forget US 19/41/78/278 on Northside between North Ave and Hollowell Parkway.

[Eth]

Georgia has a signed state route concurrent with every mile of US highway, and unsigned state routes concurrent with every interstate. Plus a lot of random state route concurrencies that would probably be separate routes in a lot of other states.

There's the 8-way concurrency in Athens between SR 10 Loop, US 29, US 78, US 129, US 441, SR 8, SR 15, and unsigned SR 422.

Is Georgia the only state with two separate 4-way US route concurrencies? In addition to that one in Athens, US 29 and 78 also pick up US 23 and 278 in Atlanta.

Also can't forget US 19/41/78/278 on Northside between North Ave and Hollowell Parkway.

And US 1/25/78/278 in Augusta, now that I think of it. And US 1/23/82/84 in Waycross. So that's 5 different concurrencies of 4 US routes in Georgia.

[zachary_amaryllis]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

[JayhawkCO]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

[US 89]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

Although CDOT doesn't sign these, doesn't AASHTO consider US 85 to also jump off I-25 in Walsenburg, and US 87 to run concurrent with US 85 through both the Walsenburg and Colorado Springs sections?

[JayhawkCO]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

Although CDOT doesn't sign these, doesn't AASHTO consider US 85 to also jump off I-25 in Walsenburg, and US 87 to run concurrent with US 85 through both the Walsenburg and Colorado Springs sections?

Not that I'm aware of.  At least going through CDOT's mapping software, there is no mention at all of US87 and the first mention of US85 is 85A at Fountain.  Do you have something that says otherwise?

Chris

[gonealookin]

To the contrary, California barely posts concurrencies at all. I am only aware of the I-580/I-80 "Wrong Way" concurrency, one exit (not sure it's posted) of US-101 and CASR-152, and a few miles of US-101/CASR-156 in northern California. The routes that would benefit from it the most, CASR-99 and I-305/US-50 and I-5, and likewise with CASR-16 don't do it at all. There may be posted concurrencies of US-50 and CASR-89 and I-80 can CASR-267 in order to run through agricultural inspection, but I am not sure that anything is clearly posted (and it's usually just for one or two exits or intersections). I also believe that there is a posted concurrency of CASRs 35 and 92 (possibly with I-280, but I doubt it).

I'm sure that I've missed one or two, but California is very much a "post one route" state.

You mention CA 89 which has a whole bunch of concurrencies and I do think all of them are posted.  Locally, that's the case for CA 88/89 from Woodfords to Hope Valley and US 50/CA 89 from Meyers to South Lake Tahoe.  Here's one for I-80/CA 89 in Truckee.  To the north there are additional concurrencies with CA 49, CA 70, CA 36 and CA 44 and I'm pretty sure these are all posted as well.

[US 89]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

Although CDOT doesn't sign these, doesn't AASHTO consider US 85 to also jump off I-25 in Walsenburg, and US 87 to run concurrent with US 85 through both the Walsenburg and Colorado Springs sections?

Not that I'm aware of.  At least going through CDOT's mapping software, there is no mention at all of US87 and the first mention of US85 is 85A at Fountain.  Do you have something that says otherwise?

Chris

See this thread from the Travel Mapping site where it was briefly discussed: https://forum.travelmapping.net/index.php?topic=3406.0

As far as CDOT is concerned, US 87 does not exist in Colorado. Same thing with US 85 south of Fountain. CDOT's Highway Data Explorer is not really all that helpful when it comes to things like this because there are no concurrencies at all in the internal designations, and interstate business loops sometimes take priority over any concurrent US highways.

[JayhawkCO]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

Although CDOT doesn't sign these, doesn't AASHTO consider US 85 to also jump off I-25 in Walsenburg, and US 87 to run concurrent with US 85 through both the Walsenburg and Colorado Springs sections?

Not that I'm aware of.  At least going through CDOT's mapping software, there is no mention at all of US87 and the first mention of US85 is 85A at Fountain.  Do you have something that says otherwise?

Chris

See this thread from the Travel Mapping site where it was briefly discussed: https://forum.travelmapping.net/index.php?topic=3406.0

As far as CDOT is concerned, US 87 does not exist in Colorado. Same thing with US 85 south of Fountain. CDOT's Highway Data Explorer is not really all that helpful when it comes to things like this because there are no concurrencies at all in the internal designations, and interstate business loops sometimes take priority over any concurrent US highways.

Had no idea.  Interesting.  Well, I had cliched BL25 in Walsenburg and US85 in the Springs anyway, so looks like I've still be on all of US87. 

Chris

[zachary_amaryllis]

Wyoming, of course, where almost every US highway is concurrent with at least one other highway and they'll do crazy things like have I-25/US 20/US-26/US-87 all running concurrent with each other and then have a separate I-25 Business/US 20 Business/US 26 Business/US 87 Business through whatever parallel town and sign all eight routes.

casper, wy comes to mind with that.

us-87 is concurrent, though unsigned, with i-25 through most of colorado, i believe, with the possible exception of around co springs..

US87 is concurrent the whole way.  US85 is the one that separates for a little while near Fountain.  Then it separates again from Castle Rock to Denver.  Then it finally separates I-25 for good at I-70.

Chris

Although CDOT doesn't sign these, doesn't AASHTO consider US 85 to also jump off I-25 in Walsenburg, and US 87 to run concurrent with US 85 through both the Walsenburg and Colorado Springs sections?

Not that I'm aware of.  At least going through CDOT's mapping software, there is no mention at all of US87 and the first mention of US85 is 85A at Fountain.  Do you have something that says otherwise?

Chris

i have often seen on colo springs tv, them referring to '85 and 87', but thats not in my neck of the woods.. never really spent time in the springs / fountain, just been through there on i-25

[fillup420]

North Carolina has a few impressive ones

US 19/23/25/70 north of Asheville. about 10 miles long.

I-40/I-85 Bus/US 29/70/220, and formerly 421.

US 15/501 is about 100 miles, and features a few mile multiplex with NC 24/27, another 100 mile multiplex.

I-40/85 is about 30 miles, and is very busy all the time.