Most number of highways sharing the same multiplex

[hbelkins]

Most I can think of in West Virginia is a quadriplex, through downtown Elkins.

Here is a photo from June 2000. These old signs have since been replaced.



South of Elkins, there is this quadriplex:



WV 92 was missing from this assembly when the photo was taken in 2000, but has been added since then (photo taken in 2002):

[froggie]

Why would I-44 be part of that anyway? Does it make sense to extend it into Illinois and let it begin multiplexed? I always thought I-44 ends at I-55 just south of the Poplar Street Bridge.

According to FHWA, I-44 ends at the 55/64/70 junction on the west side of the bridge.

[agentsteel53]

there is a six-way multiplex in the roundabout at Boise City, Oklahoma.  US-56, 64, 87, 287, 412, and state route 3.  Five of the routes exit to the east (all but 87), yielding a five-way multiplex on a straight road, which is signed.  I need to get photos up of the five-way reassurance gantry, as well as the six-way junction gantry approaching the traffic circle from state route 325, which ends at the circle and alas does not contribute to this already impressive situation.

[Scott5114]

Let's not forget the I-44/I-55/I-64/I-70/US-40 multiplex over the Mississippi.

Whether I-44 is part of that is debatable

Why would I-44 be part of that anyway? Does it make sense to extend it into Illinois and let it begin multiplexed? I always thought I-44 ends at I-55 just south of the Poplar Street Bridge.

Most people assume it is, but MoDOT begins posting I-44 shields on the signage high above the Mississippi approaching the I-55 exit as if it begins there. Illinois makes no mention of it. I think there's some Official Document from either MoDOT or FHWA which says it ends at the state line, but the other agency's documents contradict that.

[US71]

Meridian, MS has I-20, I-59, US 80, US 11, US 45, MS 19

[froggie]

Already mentioned...with a photograph...

Also, US 45 is not part of that multiplex, having been rerouted to its own Meridian bypass back in the early 90s.

[US71]

OK, I thought I saw a 45 sign when I was there last year. Guess I need to check my notes.

[Bryant5493]

^^ Here's a video of the U.S. 45 alignment, which is east of Downtown Meridian.

http://www.youtube.com/watch?v=baXMX9pXOcI


Be well,

Bryant

[agentsteel53]

fear the octoplex.

[roadfro]

The highest number of highways on a multiplex in Nevada is three, and there's two of them: I-515/US 93/US 95 in Henderson and Las Vegas, and US 6/US 50/US 93 between Ely and Major's Junction. A future three-way multiplex is planned in Carson City, once the Carson City Bypass is completed (four to five years from now?) and I-580 is extended along an ~6-mile stretch with US 395/US 50.

fear the octoplex.

I somewhat understand the overlapping U.S. Routes, but an additional four overlapping state highways?!

Even if a state cosigns different types of highways, that's just ridiculous...

[mightyace]

I somewhat understand the overlapping U.S. Routes, but an additional four overlapping state highways?!

Even if a state cosigns different types of highways, that's just ridiculous...

This picture in/around Ft. Wayne, IN.

Those routes all separate outside the city.

[golden eagle]

That must be a really old picture, with all the old cars on it.

[rawmustard]

That must be a really old picture, with all the old cars on it.

It would predate Coliseum Boulevard, which was the first bypass of Fort Wayne. And it should be noted that there weren't really eight designations along Jefferson at this point–the gantry merely shows that NB US 27/US 33/SR 1/SR 3 is a little farther east, although I believe at the time the photo was taken, SB US 33 did depart Jefferson onto Clinton, as it would have come into downtown via the old Lincoln Highway alignment with US 30.

[agentsteel53]

December 27th, 1966.

[leifvanderwall]

One of the reasons why there are so many multiplexes or overlapping of highways is it saves state & federal money by putting three major highways on one road in the area instead of putting two different monnikers on two different roads for example in Fort Wayne and Indy. Also it saves numbers from being used up- That's why in Ohio you see US 250 sharing the pavement with Ohio 800. The problem, I have is Georgia where in Atlanta there are eight different routes signed on one street. I know, I know. In case the feds decide to decommission the US highway , the state could easily rename it, but is it necessary for Georgia to put up a GA 35 ends sign  at the Florida state Line when drivers only refer to the highway as US 319. I don't think so.

[florida]

Not counting underlying state routes, there is one quad-plex in FL. US 17/US 23/Alt US 90 (unsigned)/SR 228 share pavement for at least one block.

[xonhulu]

Most you get in Oregon are 3 highways sharing pavement, but I happen 3 times:

I-205, OR 213, OR 224 in Clackamas;

I-84, US 30, US 395 near Pendleton;

and US 20, US 26, and OR 201 in Nyssa.

Of course, just a little ways over in Idaho, there are the 2 quadriplexes of I-84/US 20/US 26/US 30, and at least 3 triplexes: I 84/US 30/ID 55, US 20/US 26/US 93, and I-15/US 30/US 91 (I'm old enough to remember when this was a quadriplex with US 191 as well). 

[usends]

I think Main Street Limon carries the most in Colorado (a quintuplex)...
http://www.mesalek.com/colo/picts/limon_multi.jpg
...but in my opinion, that one's kinda stupid: I think all three of the US routes should be directed to use I-70 instead of Main.

[US71]

I think Main Street Limon carries the most in Colorado (a quintuplex)...
http://www.mesalek.com/colo/picts/limon_multi.jpg
...but in my opinion, that one's kinda stupid: I think all three of the US routes should be directed to use I-70 instead of Main.

I'd forgotten about that one. Then again, it's been 3 years since I was there. Colorado does odd things with their US Routes. They may follow the Interstates, but will follow their old alignments through town back to the Interstate.

Arkansas throws their US Routes on the Interstates then pretends they don't exist

[agentsteel53]

Colorado does odd things with their US Routes. They may follow the Interstates, but will follow their old alignments through town back to the Interstate.

furthermore, some alignments are signed with state route shields.  There is CO-36 and CO-40, with the US routes paralleling them on the freeway!

[Brandon]

One of the reasons why there are so many multiplexes or overlapping of highways is it saves state & federal money by putting three major highways on one road in the area instead of putting two different monnikers on two different roads for example in Fort Wayne and Indy.

InDOT also has a 12,000 mile cap on the state highway system.  In order to extend the system, i.e. add a new freeway, they need to decommission another highway.  They are not allowed by state law to have anymore than those miles alotted them.  This is one reason why Indiana has so many multiplexes with so many different routes on them.

[agentsteel53]

InDOT also has a 12,000 mile cap on the state highway system. 

why do states have caps in general?  Seems to me like a bit of political maneuvering, but to what end?

[Greybear]

Arkansas has a quintiplex, or five highway multiplex.

I-30, US 65, US 67, US 70, US 167 in Little Rock. Per Arkansas regulations, only I-30 is signed.

[US71]

Arkansas has a quintiplex, or five highway multiplex.

I-30, US 65, US 67, US 70, US 167 in Little Rock. Per Arkansas regulations, only I-30 is signed.

It's not a regulation, per se. It's AHTD "policy" (I call it laziness)

[okroads]

there is a six-way multiplex in the roundabout at Boise City, Oklahoma.  US-56, 64, 87, 287, 412, and state route 3.  Five of the routes exit to the east (all but 87), yielding a five-way multiplex on a straight road, which is signed.  I need to get photos up of the five-way reassurance gantry, as well as the six-way junction gantry approaching the traffic circle from state route 325, which ends at the circle and alas does not contribute to this already impressive situation.

Slight nitpick - U.S. 385 is part of the roundabout, but not U.S. 87. U.S. 87 does not enter Oklahoma.

Here is a pic of the quint-plex(?) in Boise City, taken in 2004 before the new highway shields:



OK 325 East approaching the roundabout does have all six highways signed: