State with most US route concurrencies

[roadman65]

I was just wondering which state has the most US route overlaps?  I noticed that Georgia seems to have many small towns and cities that have two US route designations overlapping as well as long stretches of routes overlapping (US 1 and 23 for instance).  Plus US 1 itself overlaps eight different other US routes in its 232 mile journey within the state.  So I must say that the Peach State would be the winner here, but have not officially counted them all.  I only came to the conclusion based on those two factors.

Plus Georgia you have to admit has more US routes per square mile than any other state including the big one's like NY and CA which is another factor to add.

[corco]

I'd bet that by percentage of US Route mileage (but not by total US Route mileage), Wyoming has the most US route concurrencies.

[adventurernumber1]

I will say that Georgia does have a lot of US Route concurrencies, but I also have not counted every state, so Idk for certain if it's the winner. But GA has a lot, that's for sure.

[roadman65]

Yes Corco that is true, but how many total?

If you drive through Georgia on all US routes you will be overlapped with other US routes no doubt just like Wyoming.

However does Wyoming have as many concurrencies in number as Georgia?

[cjk374]

Add Arkansas to the list.  I think every one of its US routes overlap at some point in the state.

[pianocello]

Indiana might be a contender for a couple of reasons: It's a primarily PLSS-grid state, but there are still plenty of diagonal routes, some of which zigzag along east-west and north-south roads for long stretches rather than making a straight line from Point A to Point B (US 35 comes to mind). Also, as of late, INDOT has rerouted plenty of US highways around cities, creating more concurrencies than ever before. I'll crunch some numbers later.

[corco]

However does Wyoming have as many concurrencies in number as Georgia?

Probably not. I'd bet the average concurrency length is longer though.

If you're going on pure quantity, this is probably a pretty boring thread subject, because I'm not sure how it could be anything other than Georgia or maybe Arkansas.

[cjk374]

If you're going on pure quantity, this is probably a pretty boring thread subject, because I'm not sure how it could be anything other than Georgia or maybe Arkansas.

Perhaps you could try listing them all to add some spice to the thread?   

[roadman65]

However does Wyoming have as many concurrencies in number as Georgia?

Probably not. I'd bet the average concurrency length is longer though.

If you're going on pure quantity, this is probably a pretty boring thread subject, because I'm not sure how it could be anything other than Georgia or maybe Arkansas.

Problem is when you like photographing like I do, having a state like Georgia and Arkansas is perfect for taking pictures of assemblies.  Of course you have Virginia and its many state routes and its long shield assemblies at route junctions that make good subjects on that, but I guess when you see that it makes it more interesting to wonder how.

I think the interesting thing is that it is too boring (unless your NE 2 who has all the time on his hands) to count every one of them, but at the same time curious as each state has its own personal way of aligning routes. 

We already mentioned here quantity verses overall lengths which already made this topic fascinating so far.  Plus I think we are coming up with more most of something than the OP  that is related to the OP making this topic an interesting discussion.

[cjk374]

^^You are gonna be disappointed going to Arkansas looking for assemblies.  They DO NOT like to sign highway concurrencies.  Finding such assemblies are an adventure all to itself.

[roadman65]

^^You are gonna be disappointed going to Arkansas looking for assemblies.  They DO NOT like to sign highway concurrencies.  Finding such assemblies are an adventure all to itself.

Actually nothing surprises me anymore.  Just like US 50 in Grand Junction, CO where it becomes almost non existent after it merges with US 6, where it should be signed like US 85 hundreds of miles to the east where concurrent with I-25 is not at all disappointing when I make it back to Arkansas.

I lived in New Jersey for half of my life that had few US route concurrencies so I can live LOL!

[pianocello]

Indiana might be a contender for a couple of reasons: It's a primarily PLSS-grid state, but there are still plenty of diagonal routes, some of which zigzag along east-west and north-south roads for long stretches rather than making a straight line from Point A to Point B (US 35 comes to mind). Also, as of late, INDOT has rerouted plenty of US highways around cities, creating more concurrencies than ever before. I'll crunch some numbers later.

I found out that Indiana has 20 US routes and 33 concurrencies, making it 1.65 per route. The total mileage of US Routes in Indiana is 2826 miles, and about 8.8% of that (250 miles or so) is part of a concurrency. To prevent double- and triple-counting for mileage, I defined 2-, 3-, 4-, and 5-way concurrencies differently. I realize that this might have skewed the number of concurrencies a bit based on definition, but what else am I supposed to do with the mess around Indianapolis?

The 2 longest concurrencies are US 41/150 (55.83 miles) and US 50/150 (37.67 miles), which leads me to question why US 150 even exists north/west of Shoals, but that's another topic. The average length of a concurrency is 7.52 miles, but throwing out the US 150 concurrencies would make it 4.6 miles.

Ok, well, there's Indiana. What do the numbers look like for Georgia, Arkansas, and Wyoming?

[Kacie Jane]

I lived in New Jersey for half of my life that had few US route concurrencies so I can live LOL!

But for the number of routes it has, I'd say it has a fair number... 1/9(/46), 30/130, 40/322, 202/206... I may be missing one or two, but even if I'm not, I think that leaves US 22 as the only one without a concurrency in the state.

[Charles2]

Not sure how it ranks, but in Alabama all put two US routes have at least one concurrency with another US route.  Also, eight routes have concurrencies with Interstate routes.

11: 80, 43, 78, 278, 431 (plus I-20/59)
29: 31, 84, 331, 80, 280 (plus I-85)
31: 29, 84, 280, 278 (plus I-65)
43: 80, 11, 82, 278, 72
45: none
72: 43, 231, 431 (plus I-565)
78: 11, 431 (plus I-22 and I-20)
80: 11, 43, 82, 231, 29, 280, 431 (plus I-85)
82: 43, 80, 231, 431 (plus I-65)
84: 31, 231, 431
90: 98
98: 90
231: 431, 82, 80, 280, 411, 431, 72
278: 43, 31, 431, 11
280: 31, 231, 29, 431, 80 (plus I-85)
331: 29
411: 231
431: 231, 84, 82, 280, 80, 78, 278, 11, 231, 72

[hbelkins]

The only US routes in Kentucky that don't have concurrencies are 25E, 25W and (I think) 79. (I'm not sure if there is short concurrency where 79 crosses 41 or not; seems like I remember that intersection was going to be rebuilt.)

US 60 has a concurrency with every US route it intersects where the other route does not terminate.

[TEG24601]

How about Oregon, which has numerous times that 20/26/30 come together in one combination or another?

[Kacie Jane]

How about Oregon, which has numerous times that 20/26/30 come together in one combination or another?

That would be Idaho.

[SD Mapman]

Wyoming or Oklahoma (or maybe one of those SE states).

[Eth]

Of Georgia's 25 US routes, only three have no concurrencies and only six others have fewer than five. US 129 is the state's record-holder, joining with a total of thirteen other routes in its journey across the state.

The full list:

US 1 - 23, 301, 82, 84, 221, 78, 278, 25
US 11 - none
US 17 - 80 (and I-516 and I-16)
US 19 - 84, 82, 280, 80, 41, 29, 78, 278, 129 (and I-285)
US 23 - 1, 301, 82, 84, 341, (129 Alt), 80, 129, 29, 78, 278, 129 (again), 441, 76 (and I-985)
US 25 - 341, 301, 84, 80, 1, 78, 278
US 27 - 84, 280, 29, 278, 411
US 29 - 27, (27 Alt), 19, 41, 78, 278, 23, 78 (again), 129, 441
US 41 - 221, 129, 19, 29, 78, 278, 411, 76 (and I-75)
US 76 - 41, 411, 23, 441
US 78 - 278, 19, 41, 29, 23, 29 (again), 129, 441, 278 (again), 1, 25
US 80 - 19, 129, 23, (129 Alt), 319, 25, 17 (and I-516)
US 82 - 19, 319, 129, 1, 23, 84
US 84 - 27, 319, 19, 221, 1, 23, 82, 25, 301
US 123 - none
US 129 - 221, 82, 319, 341, 41, 80, 23, 441, 278, 29, 78, 23, 19 (and I-985)
US 221 - 84, 41, 129, 441, 319, 1
US 278 - 27, 78, 19, 41, 29, 23, 129, 441, 78 (again), 1, 25 (and I-20)
US 280 - 27, 19, 319, 441
US 301 - 1, 23, 25, 84
US 319 - 84, 82, 129, 441, 280, 80, 221
US 341 - 25, 23, (129 Alt), 129
US 378 - none
US 411 - 27, 41, 76
US 441 - 221, 319, 280, 129, 278, 29, 78, 23, 76

[adventurernumber1]

Of Georgia's 25 US routes, only three have no concurrencies and only six others have fewer than five. US 129 is the state's record-holder, joining with a total of thirteen other routes in its journey across the state.

The full list:

US 1 - 23, 301, 82, 84, 221, 78, 278, 25
US 11 - none
US 17 - 80 (and I-516 and I-16)
US 19 - 84, 82, 280, 80, 41, 29, 78, 278, 129 (and I-285)
US 23 - 1, 301, 82, 84, 341, (129 Alt), 80, 129, 29, 78, 278, 129 (again), 441, 76 (and I-985)
US 25 - 341, 301, 84, 80, 1, 78, 278
US 27 - 84, 280, 29, 278, 411
US 29 - 27, (27 Alt), 19, 41, 78, 278, 23, 78 (again), 129, 441
US 41 - 221, 129, 19, 29, 78, 278, 411, 76 (and I-75)
US 76 - 41, 411, 23, 441
US 78 - 278, 19, 41, 29, 23, 29 (again), 129, 441, 278 (again), 1, 25
US 80 - 19, 129, 23, (129 Alt), 319, 25, 17 (and I-516)
US 82 - 19, 319, 129, 1, 23, 84
US 84 - 17, 319, 19, 221, 1, 23, 82, 25, 301
US 123 - none
US 129 - 221, 82, 319, 341, 41, 80, 23, 441, 278, 29, 78, 23, 19 (and I-985)
US 221 - 84, 41, 129, 441, 319, 1
US 278 - 27, 78, 19, 41, 29, 23, 129, 441, 78 (again), 1, 25 (and I-20)
US 280 - 27, 19, 319, 441
US 301 - 1, 23, 25, 84
US 319 - 84, 82, 129, 441, 280, 80, 221
US 341 - 25, 23, (129 Alt), 129
US 378 - none
US 411 - 27, 41, 76
US 441 - 221, 319, 280, 129, 278, 29, 78, 23, 76

Georgia may very likely be the winner, here. 

Thanks for the research!

[bing101]

California at one point had Route Concurrencies such as US-40 and US-50 Bay Bridge to San Francisco. US-60, US-70 and US-99 at the East LA interchange, US-99 and US-50 from Sacramento to Tracy. US-6 and US-66 from the now US-101 @ CA-110 interchange to I-10 @ I-110 interchange in Downtown Los Angeles.

[TheStranger]

California at one point had Route Concurrencies such as US-40 and US-50 Bay Bridge to San Francisco. US-60, US-70 and US-99 at the East LA interchange, US-99 and US-50 from Sacramento to Tracy. US-6 and US-66 from the now US-101 @ CA-110 interchange to I-10 @ I-110 interchange in Downtown Los Angeles.

US 60, 70, and 99 ran together from the San Bernardino Split (not the East Los Angeles Interchange, which didn't exist until the early 1960s) east to Pomona, and then again from Beaumont to Indio.

99 & 50 split in Stockton, not Tracy, with 50 following the old surface street alignment of Route 4 west, then southward along today's I-5 to Tracy.

The 6/66 combined segment was between 5 (99 at the time) and 101.

[txstateends]

Texas:

US 57 - 277
US 59 - 69, 71, 77, 79, 84
US 60 - 83, 87, 287
US 62 - 70, 82, 83, 85, 180, 380, 385
US 67 - 77*, 82, 83, 84, 90, 183, 277, 283, 377, 385
US 69 - 59, 75, 96, 287, 380
US 70 - 62, 84, 183, 287
US 71 - 59
US 75 - 69
US 77 - 59, 67*, 190, 377
US 79 - 59, 84, 190, 259
US 81 - 287
US 82 - 62, 67, 183, 271, 277, 281, 283, 287, 380, 385
US 83 - 60, 62, 67, 77, 84, 190, 277, 377, 380
US 84 - 59, 67, 70, 79, 83, 183, 277, 283, 287, 377, 380
US 85 - 62, 180
US 87 - 60, 90, 180, 183, 190, 277, 287, 290, 377, 385
US 90 - 67, 87, 183, 277, 377, 385
US 96 - 69, 287
US 180 - 62, 85, 87, 283
US 183 - 67, 70, 82, 84, 87, 90, 190, 277, 281, 283, 287
US 190 - 77, 79, 83, 87, 183, 277, 281, 377
US 259 - 79
US 271 - 82
US 277 - 57, 67, 82, 83, 84, 87, 90, 183, 190, 281, 283, 287, 377
US 281 - 82, 183, 190, 277, 287, 290, 380
US 283 - 67, 82, 84, 180, 183, 277
US 285 - 385
US 287 - 60, 69, 70, 81, 82, 84, 87, 96, 183, 277, 281, 377
US 290 - 87, 281
US 377 - 67, 77, 83, 84, 87, 90, 183, 190, 277, 287, 380
US 380 - 62, 69, 82, 83, 84, 281, 377, 385
US 385 - 62, 67, 82, 87, 90, 285, 380

The other US routes (54, 80, 175, 181) have no US overlaps in Texas.  Despite the notion that US 62 is an overlap-happy route, US 277 has the most in the state with 13.

(* -- routes that are designated, but unsigned, at the point of overlap)

[Laura]

In Maryland, US 50 has sections where it is concurrent with US 301 and US 13. US 219 and US 40 are concurrent for a short distance in western Maryland (along I-68).

[KEVIN_224]

Connecticut has portions of US Routes 1, 5, 6, 7, 44 and 202.

US Route 1 is concurrent with I-95 in the Old Saybrook and New London areas (bridges over the Connecticut and Thames Rivers).

US Route 5 is concurrent with CT Route 15 from Meriden to East Hartford (Berlin Turnpike from Meriden to Wethersfield). US Route 5 doesn't run concurrent with an interstate until Exit 1 southbound of I-91 in Springfield, MA.

US Route 6 is concurrent with I-84 in Danbury from Exit 4 to 8, then again from Newtown to Southbury, followed by a longer run from Exit 38 Westbound in Farmington to Exit 60 in Manchester. US Route 6 is concurrent with US Route 202 from the NY border to I-84 Exit 7 in Danbury. It is concurrent with US Route 7 from I-84 Exit 4 to Exit 7.

US Route 7 is concurrent with I-84 between Exits 3 and 4 in Danbury. It is also concurrent with US Route 6 and 202 on I-84 from Exits 4 to 7.

US Route 44 is concurrent with I-84 over the Bulkeley Bridge between Exit 50 in Hartford and Exit 53 in East Hartford. It also shares the road with US Route 6 in sections of Manchester and Bolton.

US Route 202 is concurrent with US Route 6 from the NY border to Exit 7 of I-84 in Danbury. It also shares the road with US Route 7 from I-84 Exit 4 to 7.

Did I miss anything?