Multipexes that are only refered by only one route number

[roadman65]

This is an interesting question, but does anyone know of multiplexes that have two or three or more routes that locals only show respect to one of them ONLY!

In Florida where US 17, US 92, and US 441 are triplexed between Orlando and Kissimmee locals refer to it as US 441 or 441!  Even on Central Florida Parkway there are missing shields for US 17 & 92, but a pair of directional shields and a junction shield for US 441 both ways at the intersection there!

In Orlando on FL 527 there is only FL 50 shields where it junction with US 17, US 92, and FL 50 and locals refer  it only to Highway 50 as well.

The US 27 and US 441 duplex in Lake and Marion Counties in Central Florida is only referred to being US 441!

In Georgia where US 25 and US 341 are signed concurrently, locals seem to only think that US 341 exists there as well!

I do not know if this is true or not, but a roadgeek once told me that no place in the Peach State calls out US 23 spite it is the states longest US designation of over 400 miles.  It is either reffered to by its GA secret route, local name, or other US routes that are concurrent!

Are there any others out there that people call by one route number?

[agentsteel53]

the I-95/MA-128 multiplex is, thirty years after the interstate designation, still called solely "route 128" by the locals.

[corco]

Except over the concurrency with I-80, US-287 gets prime billing over all other routes  through Wyoming. If you said to take 30 up to Med Bow from Laramie you would get weird looks. Nobody acknowledges US-18, and I'm pretty sure 26 is only acknowledged east of I-25.

Also, not quite on subject but it just occurred to me that I've noticed a lot of people down here in Tucson call I-19 "I-10" and I-10 is just "the road to New Mexico"

[agentsteel53]

on a related note, old US-101 in the north part of San Diego County is called just that: "the 101".  Hasn't been signed as such since 1966 but that's what it is.

[iwishiwascanadian]

US-6 is multiplexed through Greater Hartford and Danbury with I-84 and it's always referred to as 84...once it's off 84 it's back to being known as Route 6...or Suicide 6...

[Brandon]

I-64 and US-40 in St Louis is commonly called "Highway 40" by the locals.

[The Premier]

SR 8 and SR 59 in Akron and Cuyahoga Falls. When SR 59 joins SR 8, the multiplex section is referred only as "Route 8."

[Dr Frankenstein]

The entire A-15/QC-132 and A-20/QC-132 south of Montreal is referred to as "The 132"; the A-40/A-15 in Montreal is "The 40", or even "The Metropolitan". The QC-132/QC-138 in Châteauguay and Kahnawake is just "The 138".

[Eth]

I do not know if this is true or not, but a roadgeek once told me that no place in the Peach State calls out US 23 spite it is the states longest US designation of over 400 miles.  It is either reffered to by its GA secret route, local name, or other US routes that are concurrent!

I can't speak for the whole state, but it's certainly true in metro Atlanta.  Northeast of town it's just called Buford Highway.  On the southside, it's referred to universally as "forty-two" (for GA 42, which is its multiplex there).

Similarly, US 19/GA 400 north of Atlanta is referred to only as "400" or "GA 400", never "US 19".

[tdindy88]

The Interstate 465 beltway around Indianapolis is always called 465, or I-465, no mention of I-74 that follows it around the south and west legs and there will probably be no reference to I-69 when it is multiplexed around the highway as well. When you refer to I-74 it's always the part outside the 465 beltway.

[KillerTux]

US 50 from MD Eastern Shore to DC is just called "50" even though there is US 301, I-595 and MD 2. MD 16, MD 18 that tags along for some of the route.

[Rupertus]

There are a few of these in Michigan. The most infamous is I-96/I-275 in Metro Detroit, which is known strictly as "275" despite the fact that FHWA doesn't even consider I-275 to extend onto that stretch of road. There are also a couple of instances where a US highway shares a long multiplex with an Interstate but no one really refers to it that way, such as I-75/US 23 (usually known simply as I-75) and I-196/US 31 (I think people call this 196).

Venturing a few miles south of the border, US 23 joins I-475. I don't think many people traveling to or from Michigan pay any attention to the Interstate designation on that road. Don't forget about the multiplexes that are almost always referred to by name rather than by number, e.g. Ohio Turnpike/Indiana Toll Road for I-80/90 and the Dan Ryan for I-90/94.

[Revive 755]

Seems fairly common that with interstate - US Route multiplexes, the US Route seemingly disappears in normal conversation, but may occasionally show up on newspaper maps.

Illinois
* I-255/US 50 - US 50 rarely mentioned
* I-64/US 50 - same
* I-72/US 36 - US 36 rarely mentioned

Missouri
* I-70/US 40 - US 40 rarely mentioned
* I-44/US 50 - US 50 rarely mentioned, the decommissioned US 66 seems more likely to be mentioned
* I-255/US 50 - US 50 almost never mentioned

Other candidates, not necessarily I-/US combinations
* I-55/I-72 around Springfield, IL - So far it seems I-72 goes into hiding in conversations regarding this section
* US 40/US 61/I-64 in St. Louis County - In addition to I-64 often being neglected, US 61 also seems to disappear often.  I recall the section in St. Charles County getting the 40-61 name though

[roadfro]

In Las Vegas, the I-515/US 93/US 95 multiplex is simply referred to as US 95 (or "the 95"). Through North Las Vegas, the I-15/US 93 multiplex is simply referred to as I-15 (or "the 15").

In both cases, this is largely due to the fact that US 93 changes from one freeway to the other at the Spaghetti Bowl downtown, whereas its partnered highway crosses through the interchange and exists on its own, proving to be the through route that is more dominant for travel directions.

In the case of I-515, that route has only been signed for about 15-16 years and only overlaps part of US 95, so it's not really a through route that people recognize like I-15 or US 95. It's only been within the last 5-8 years that more people around the Vegas area have started referring to "the 515" or even know where it is. Longtime locals will exclusively refer to that multiplex as 95 (even I do when not in "roadgeek mode").

[kharvey10]

the short section of I-57/64 in Mt. Vernon is mostly referred as I-57; the same is true for I-57/US 51 in deep southern Illinois

[Greybear]

Down here in North Texas, where I-30/US 67 in Hunt and Hopkins counties are multiplexed, 67 is often forgotten.

[myosh_tino]

Up here in northern California, most people, including traffic reporters, refer to a segment of the Eastshore Freeway from the MacArthur Maze to the Richmond-San Rafael Bridge exit only as I-80 even though it is multiplexed with I-580.  I guess that's because there are so few multiplexes in California.

[mgk920]

A couple here in Wisconsin:

-The part of the WI 441 freeway that also includes US 10 here in the Appleton area is always referred to by locals as simply 'WI 441', 'Highway 441' or just '441'.  West of US 41, that freeway is 'US 10' or 'Highway 10'.

-In metro Milwaukee, the part of I-894 that includes I-43 is still just 'I-894'.

Mike

[codyg1985]

Alt US 72/AL 20 in North Alabama is more commonly known by the locals as Highway 20. I guess Highway 20 is easier to say than US 72 Alternate or Alternate US 72.

[hbelkins]

KY 11 and KY 15 through Powell County, Ky. Officially it's just KY 11 since Kentucky signs but doesn't officially recognize co-signed routes, but locals call it Highway 15.

I-265 and KY 841, the Gene Synder Freeway, referred to as 841.

[exit322]

I-76/277 and US 224 in the Lodi/Akron area - many locals, 50 years after the I-76 portion became an interstate and pushing 40 years after it became I-76 (it was I-80S), many locals still call it Route 224.

[agentsteel53]

Up here in northern California, most people, including traffic reporters, refer to a segment of the Eastshore Freeway from the MacArthur Maze to the Richmond-San Rafael Bridge exit only as I-80 even though it is multiplexed with I-580.  I guess that's because there are so few multiplexes in California.

to the bridge, at which point 80 has split off and the route is solely 580?

I wish they'd just call it "17".  80/580 has gotta be the most absurd multiplex on the interstate system.  for a state that avoids multiplexes, California really made a boner with this one.

I remember a time when I came to a dead stop at the on-ramp, attempting to figure out that if I wanted to head north, would I need to be going eastwest or westeast?

[huskeroadgeek]

The US 67/167 freeway N. of Little Rock is usually just referred to as US 67(although you do occasionally hear "US 67/167" in ads). Even though US 64 is also on the portion of the freeway between Beebe and Bald Knob, US 64 is almost never acknowledged.

[PAHighways]

I-279/Truck US 19 is just I-279 on guide signs and aside from "Parkway North" is sometimes called just "279."  The same with "the Parkway" which is I-376/US 22/US 30 for most of it's length, being referred to just as I-376 on guides and less commonly as "376."  In both cases, the US route multiplexes are mentioned on auxiliary signage at major interchanges.

[Coelacanth]

Here in MN we have a ton of unsigned multiplexes.

For example I-94/US 10/US 12/US 52 and I-94/US 10/US 12/US 61 are both just "94".

For those that are actually signed, I've never heard anyone refer to I-494/MN 5 as anything other than "494". I-94/I-694 in the north metro is generally just "694".