Interesting Stuff about 2 Route Number Overlaps

[roadman65]

Lets see if anyone can come up with something interesting about the many different route concurrencies, either interstate, US, State, or County.  This meaning something interesting about the numbers themselves or the relationship between the two numbers, not the actual roads themselves.

For example, Interstate 70 & 71 overlap in Columbus, OH are the only two sequential route numbers in the interstate system that do this.

Then the I-69 & I-96 concurrency in Lansing, MI have a unique situation in the interstate system where both routes have the same exact two digits.

Then in Osceola County, FL you have both US 192 & US 441 that overlap where both route numbers are multiples of 3, ie. 64 X 3=192 and 147 X 3 = 441.

In Northern New Jersey the US 1 & 9 duplex have both numbers being either first or last in the single digits numerals.

Lets see if anyone can find anything else interesting about the numbers of two route concurrencies. Oh by the way it has to be two route numbers of the same designation.  Interstate/ US, Interstate/ State, US/State etc, do not count. It has to be either two interstates, or two US routes, or 2 state routes or even two county designation route concurrencies.

[agentsteel53]

For example, Interstate 70 & 71 overlap in Columbus, OH are the only two sequential route numbers in the interstate system that do this.

I think 73-74 might count as an overlap, crock of shit as it is.

the Louisville, KY area has interstate 264 and 265, which I think is the only example of sequential three-digit interstates in the same general vicinity.  alas, they do not quite intersect.

there are US 60-61, 61-62, and 60-62 overlaps in Sikeston, MO.  I don't believe there was ever a 60-61-62.

there was, however, a 23-24-25 overlap in Ohio at one point.

[NE2]

[Alps]

www.alpsroads.net/roads/nj/spui enjoy your own conclusions

[Michael]

I posted the following in the Opposite Multiplexes thread, and it fits here too:

• NY 34 and NY 34B north of Ithaca for about half a mile.
• US 15/220 in Williamsport, PA.  Before I-180 was changed to east-west, it would have been the opposite of US 220, along with US 15.

NY 34/NY 34B is a wrong-way multiplex, goes almost perfectly east-west while both routes are signed north-south, and is the only local instance I'm aware of where a child route is multiplexed with its parent.

Both US 15 and US 220 are having portions replaced by I-99.

In addition, I can remember being little, and thinking it was cool that the NY 34/38 duplex in Auburn had route numbers that were so close to each other.

[Kacie Jane]

NY 34/NY 34B is a wrong-way multiplex, goes almost perfectly east-west while both routes are signed north-south, and is the only local instance I'm aware of where a child route is multiplexed with its parent.

I realize you said "only local instance" and US 9 isn't terribly close to Auburn, but it multiplexes three separate times with NY 9A, and twice with 9N.

[DTComposer]

NY 34/NY 34B is a wrong-way multiplex, goes almost perfectly east-west while both routes are signed north-south, and is the only local instance I'm aware of where a child route is multiplexed with its parent.

(edit before I post: I see you said only local instance as well)

I'm sure there must be others - wouldn't the I-80/I-580 in California multiplex count, not just as a parent/child multiplex, but also a multiple-wrong way multiplex? (I-80 eastbound is I-580 westbound but you're actually heading north, and vice-versa)

[Duke87]

A thread like this is not complete without Wytheville's wrong way multiplex of doom:

[KEVIN_224]

I-90 (Massachusetts Turnpike) and I-91 intersect near the West Springfield/Holyoke, MA town line. They do have an interchange.

[MVHighways]

I-90 (Massachusetts Turnpike) and I-91 intersect near the West Springfield/Holyoke, MA town line. They do have an interchange.

That doesn't count. It's just a unique way of having three roads (remember, US 5 is there too) interchange to save space.

[Some_Person]

Did anyone forget the infamous 74/74 multiplex?



This is the only place in the US where this happens (Interstate and US Route of the same number multiplex) due to how the numbering grids for each are the opposite of each other, in an effort to prevent stuff like that happening

[hbelkins]

US 270 and US 271 in Oklahoma.

[KEVIN_224]

US Route 6 and 7 overlap in Danbury, CT. They're both along I-84, between Exits 4 to 7 of said interstate.

I know this likely won't count: US Route 5 crosses under the multiplex of I-84/US Route 6 in East Hartford, CT. The "interchange" only has one on-ramp from US Route 5 North to I-84/US Route 6 West.

@ NE2: I know that route sign you posted is actually from Canada. 

[cpzilliacus]

What's the longest tolled segment of two multiplexed U.S. Highways? 

A candidate might be U.S. 50/U.S. 301 crossing the William Preston Lane, Jr. (Bay) Bridge.

[kkt]

What's the longest tolled segment of two multiplexed U.S. Highways? 

A candidate might be U.S. 50/U.S. 301 crossing the William Preston Lane, Jr. (Bay) Bridge.

If we can go to old route numbers, the San Francisco-Oakland Bay Bridge is longer, and from the time it opened until 1964 was US-40/US-50.

[jp the roadgeek]

Did anyone forget the infamous 74/74 multiplex?



This is the only place in the US where this happens (Interstate and US Route of the same number multiplex) due to how the numbering grids for each are the opposite of each other, in an effort to prevent stuff like that happening

It may soon be joined by the I-41/US 41 multiplex in IL and WI.

[PurdueBill]

For example, Interstate 70 & 71 overlap in Columbus, OH are the only two sequential route numbers in the interstate system that do this.

I-76 and 77 overlap in Ohio as well (in Akron) in a manner similar to 70 and 71, with the N-S interstate joining the E-W one for a short distance from one side and exiting from the other.

[mcdonaat]

In Shreveport, US 79/80 is treated as one highway, and it comes with signage to boot. US 79/80 also meets US 71, 171, and 371 while running concurrent.

US 71 also meets LA 2, 4, 6, 8, and 10, from north to south.

[kphoger]

there are US 60-61, 61-62, and 60-62 overlaps in Sikeston, MO.  I don't believe there was ever a 60-61-62.

Alas! you forget banners:

[Alps]

how about FL 400 overlaps I-4? that's a cool coincidence

[EchoCharlieHotel]

Instances of a US xy-zw concurrency and also a US xw-zy concurrency?

I actually noticed this while putzing around Google Maps a few days ago. Nosing around Yakima, WA, I saw the US 12-97 concurrency along I-82. On the other side of the country in my once and future stomping ground, there's the US 17-92 concurrency in central Florida.

If there are any others, seems they'd also likely be roughly along a NW-SE or NE-SW diagonal across the US highway grid.

[wxfree]

In Early, Texas there's an overlap of US 67/84/183/377.  Turning left from Garmon Dr. onto Early Blvd. takes you south, north, and west.
http://maps.google.com/maps?hl=en&ll=31.742493,-98.941176&spn=0.011606,0.022724&t=m&layer=c&cbll=31.742545,-98.945157&panoid=AD-FNetXOrdy4C1eibtfsQ&cbp=12,355,,0,0&z=16

[hbelkins]

Instances of a US xy-zw concurrency and also a US xw-zy concurrency?

I actually noticed this while putzing around Google Maps a few days ago. Nosing around Yakima, WA, I saw the US 12-97 concurrency along I-82. On the other side of the country in my once and future stomping ground, there's the US 17-92 concurrency in central Florida.

If there are any others, seems they'd also likely be roughly along a NW-SE or NE-SW diagonal across the US highway grid.

How about US 25W and US 11E, and then US 11W and US 25E? Bonus is that 11W/25E is "wrong-way" in that when you're going north on one road, you're going south on the other.

A couple of hours northeast from that area, you have US 11 and US 52.

[vtk]

I think I already mentioned this in another thread, but there's Galion, OH, in which OH 19 and OH 61 overlap; one is an upside-down version of the other.  Fittingly, it's a wrong-way multiplex.

[bugo]

Arkansas 43 is dual signed with Oklahoma 20.