One of those "basic topics of trivium" I thought about last night looking at my most recent copy of the Rand McNally atlas...a couple come to mind immediately:
- I-90/I-94 in Madison and in Chicago
- Routes 93 and 95 across national borders! (one towards Golden, BC, and US 93/95 in Las Vegas/Boulder City)
- US 40 and I-70 in various points across the Midwest
Out of the initial query comes two related questions:
- What's the longest distance between two routes' concurrencies? (I'm thinking 93/95 above might earn that distinction)
- What's the most instances of two routes running with each other on the same alignment? In California, I think it has to be Route 1 with US 101 (Exit 62B in Ventura northwest to the "Pacific Coast Highway" exit approximately mile marker 73, Exit 78 northwest to Exit 132 in Gaviota via Santa Barbara, Exit 191A in Pismo Beach to milemarker 204 in San Luis Obispo, San Francisco Presidio north across the Golden Gate Bridge to Sausalito/Marin City) with four.
I would have to study on this, but I can say that US 60 and US 62 have three concurrencies in Kentucky alone.
From the west, they enter from Illinois with US 51 and split. They come back together in Paducah and split east of town. Then they have a short "wrong-way" concurrency in Versailles, where US 60 east is US 62 west.
US-20/26 happens a lot- from Vale OR to Mountain Home ID, then from Carey ID to Atomic City ID, then from Shoshoni WY to Orin Junction Wyoming. If you count US-20 business, then mainline 26 has a brief concurrency with US-20 business in Idaho Falls as well.
There's tons of Interstate/US Route deals where that happens (I-80/US-30, I-84/US-30 etc)
US 90 and US 98 have 3, two in Mobile and one in Pensacola.
US 78 and US 278 have concurrencies in Atlanta and Augusta, and used to have a wrong way one between Guin, AL and Hamilton, AL.
Georgia State Route 20 and 81 have concurrencies in McDonough and again, shortly, in Loganville.
U.S. 29 and 78 have concurrencies from Northside Drive (U.S. 19/41/S.R. 3) in west Atlanta to just west of North DeKalb Mall, west of I-285. They come together again in Oconee County, near U.G.A.
Be well,
Bryant
US 64 and 72 in both Chattanooga and Memphis
US 23 and 129 in Macon and Gainesville, GA
Used to be one US 64/264 from Raleigh to Zebulon, then Manns Harbor to Whalebone Junction, but US 264 is truncated back to its intersection with US 64 near Mann's Harbor.
I-35/US 77 enter Oklahoma, then split at Exit 1. Then they concur between Norman and downtown OKC, where 77 splits off to follow I-235 and its own freeway, then in Edmond it follows old US-66 back to I-35 and concurs again to Guthrie!
US-377/OK-99 concur with OK-3 southeast of Ada. The two follow separate routes around Ada, but on the northwest side of town, half of OK-3 reunites with US-377 and OK-99–it had split into 3E and 3W by this point. US-377/OK-3E/99 stay together until Seminole.
US6 and I 84 are concurrent 3 different times in CT. First time is just east of Danbury for about 4 miles, then again for about 6.5 miles between Newtown and Southbury, and again It gains concurrency in Farmington running east together all the way through W. Hartford, Hartford, E. Hartford, and into manchester, where concurrency breaks for the last time in CT.
US 71/US 59 in Missouri & Arkansas
Quote- What's the longest distance between two routes' concurrencies? (I'm thinking 93/95 above might earn that distinction)
Although not quite as long as the 1100-some miles for 93/95, US 26 and US 30 go about 815 miles in between their concurrencies at Bliss, ID and Ogallala, NE.
Quote- What's the most instances of two routes running with each other on the same alignment? In California, I think it has to be Route 1 with US 101
Within Virginia, I-64 and US 60 have 3 separate concurrencies.
Quote from: froggie on December 24, 2009, 08:10:14 PM
Although not quite as long as the 1100-some miles for 93/95, US 26 and US 30 go about 815 miles in between their concurrencies at Bliss, ID and Ogallala, NE.
hell of a long concurrency in Ogallala! :-D precisely one block, and only the eastbound (heading south) branch of the US-26 one-way pair.
I had to look that one up, as I had thought US-26 ended at US-30. Nope, nowadays it ends at I-80 just a bit south of US-30.
US 64/412 have 3 duplexes in Oklahoma.
US-6 and US-50 have two concurrencies in Utah.
I-84 and US 30 is in the running for the most concurrencies: Portland to Cascade Locks, Cascade Locks to Hood River, Hood River to Rowena, The Dalles to Pendleton, Pendleton to La Grande, La Grande to North Powder, Baker to Huntington, Huntington to Ontario, New Plymouth to Bliss, Burley to I-86, at which point I-84 goes 'To Hell with it, I'm going to Utah!': 10 concurrencies
If you count CA/OR/WA99 as a single continuous route (which it isn't anymore, I know), you'd have a good number between it and I-5: Sacramento, Red Bluff to Ashland, Central Point to Gold Hill, Grants Pass to Myrtle Creek, Myrtle Creek to Winston, Oakland to Yoncalla, Curtin to Cottage Grove, Goshen to Eugene, (OR99E: Albany to Salem), Portland to Vancouver (assuming old surface routing through Vancouver to Hazel Dell), Hazel Dell/Salmon Creek to Tacoma (not counting Bus I-5 in Centralia...): 11 concurrencies
For reference: CA 1/US 101: Oxnard to Ventura, Faria to Las Cruces, Pismo Beach to San Luis Obisbo, San Francisco to Marin City: 4 concurrencies.
This isn't a recurring concurrency, but Georgia State Route 13 is co-signed with U.S. 23 from Clairmont Road (S.R. 155) to Buford Drive (S.R. 20), where U.S. 23 begins to follow Buford Drive (S.R. 20) to I-985/S.R. 365 (Lanier Pkwy.). S.R. 13 has a newly-opened interchange (exit 17) with I-985/U.S. 23/S.R. 365, in Oakwood. Oakwood's just south of Gainesville.
Be well,
Bryant
Quote from: Bickendan on December 25, 2009, 06:00:59 AM
I-84 and US 30 is in the running for the most concurrencies: Portland to Cascade Locks, Cascade Locks to Hood River, Hood River to Rowena, The Dalles to Pendleton, Pendleton to La Grande, La Grande to North Powder, Baker to Huntington, Huntington to Ontario, New Plymouth to Bliss, Burley to I-86, at which point I-84 goes 'To Hell with it, I'm going to Utah!': 10 concurrencies
Thanks to Oregon's practice of treating US 30 as I-84's business loops, which other states don't do, this is unlikely to be topped. BTW, your 3rd should read "Hood River to Mosier."
QuoteIf you count CA/OR/WA99 as a single continuous route (which it isn't anymore, I know), you'd have a good number between it and I-5: Sacramento, Red Bluff to Ashland, Central Point to Gold Hill, Grants Pass to Myrtle Creek, Myrtle Creek to Winston, Oakland to Yoncalla, Curtin to Cottage Grove, Goshen to Eugene, (OR99E: Albany to Salem), Portland to Vancouver (assuming old surface routing through Vancouver to Hazel Dell), Hazel Dell/Salmon Creek to Tacoma (not counting Bus I-5 in Centralia...): 11 concurrencies
This is a stretch, or could at best be considered a historical high. OR 99 probably can be considered still a continuous route, albeit unsigned when it's on I-5. Also, even though ODOT has those routes in Douglas County on the books, the roads are no longer state-maintained and the county doesn't sign OR 99 on them. However, the directional signage on the freeway still identifies them as OR 99, so I still consider them OR 99. I can also buy 99E being part of 99, so I'd agree you can count all the Oregon ones plus the Sacramento concurrency with CA 99, but the rest aren't legit anymore, so this is at best 8 concurrencies by my count.
I-95 and US 17 in the Hardeeville, SC area and in Fredericksburg, VA
Quote from: agentsteel53 on December 24, 2009, 08:40:26 PM
Quote from: froggie on December 24, 2009, 08:10:14 PM
Although not quite as long as the 1100-some miles for 93/95, US 26 and US 30 go about 815 miles in between their concurrencies at Bliss, ID and Ogallala, NE.
hell of a long concurrency in Ogallala! :-D precisely one block, and only the eastbound (heading south) branch of the US-26 one-way pair.
I had to look that one up, as I had thought US-26 ended at US-30. Nope, nowadays it ends at I-80 just a bit south of US-30.
It's actually a little bit longer now- I double took and had to look through my photos when I saw that. US-26/N-61 was routed onto the road by the airport and no longer runs through downtown Ogallala. 26 then follows 30 before splitting again to head down to I-80 with N-61
Quote from: xonhulu on December 25, 2009, 01:46:58 PM
Quote from: Bickendan on December 25, 2009, 06:00:59 AM
I-84 and US 30 is in the running for the most concurrencies: Portland to Cascade Locks, Cascade Locks to Hood River, Hood River to Rowena, The Dalles to Pendleton, Pendleton to La Grande, La Grande to North Powder, Baker to Huntington, Huntington to Ontario, New Plymouth to Bliss, Burley to I-86, at which point I-84 goes 'To Hell with it, I'm going to Utah!': 10 concurrencies
Thanks to Oregon's practice of treating US 30 as I-84's business loops, which other states don't do, this is unlikely to be topped. BTW, your 3rd should read "Hood River to Mosier."
Whoops. You're right, it is Mosier. I know why Rowena popped into my head, though.
QuoteQuoteIf you count CA/OR/WA99 as a single continuous route (which it isn't anymore, I know), you'd have a good number between it and I-5: Sacramento, Red Bluff to Ashland, Central Point to Gold Hill, Grants Pass to Myrtle Creek, Myrtle Creek to Winston, Oakland to Yoncalla, Curtin to Cottage Grove, Goshen to Eugene, (OR99E: Albany to Salem), Portland to Vancouver (assuming old surface routing through Vancouver to Hazel Dell), Hazel Dell/Salmon Creek to Tacoma (not counting Bus I-5 in Centralia...): 11 concurrencies
This is a stretch, or could at best be considered a historical high. OR 99 probably can be considered still a continuous route, albeit unsigned when it's on I-5. Also, even though ODOT has those routes in Douglas County on the books, the roads are no longer state-maintained and the county doesn't sign OR 99 on them. However, the directional signage on the freeway still identifies them as OR 99, so I still consider them OR 99. I can also buy 99E being part of 99, so I'd agree you can count all the Oregon ones plus the Sacramento concurrency with CA 99, but the rest aren't legit anymore, so this is at best 8 concurrencies by my count.
Historically, there were more-- I excluded the turnoffs in Wolf Creek and Riddle, plus a couple in northern California (Dunsmuir, Shasta, Weed, Yreka?) and Washington (Kelso, Centralia -- and the Tacoma segment started in Tumwater) or the Everett-Blaine segment... But I'll accept your count of 8.
I'm surprised nobody's mentioned I-70 and US-40. I counted 12 between those but that was just a cursory look through the RMcN, not a detailed look.
--Andy
Quote from: andytom on December 25, 2009, 04:16:10 PM
I'm surprised nobody's mentioned I-70 and US-40. I counted 12 between those but that was just a cursory look through the RMcN, not a detailed look.
--Andy
Quote from: TheStranger on December 24, 2009, 12:17:22 PM
One of those "basic topics of trivium" I thought about last night looking at my most recent copy of the Rand McNally atlas...a couple come to mind immediately:
- I-90/I-94 in Madison and in Chicago
- Routes 93 and 95 across national borders! (one towards Golden, BC, and US 93/95 in Las Vegas/Boulder City)
- US 40 and I-70 in various points across the Midwest
Out of the initial query comes two related questions:
- What's the longest distance between two routes' concurrencies? (I'm thinking 93/95 above might earn that distinction)
- What's the most instances of two routes running with each other on the same alignment? In California, I think it has to be Route 1 with US 101 (Exit 62B in Ventura northwest to the "Pacific Coast Highway" exit approximately mile marker 73, Exit 78 northwest to Exit 132 in Gaviota via Santa Barbara, Exit 191A in Pismo Beach to milemarker 204 in San Luis Obispo, San Francisco Presidio north across the Golden Gate Bridge to Sausalito/Marin City) with four.
Any questions? :happy:
Bickendan: Don't forget US 99 definitely being co-signed with I-5 on the Golden State Freeway from I-10 north to Wheeler Ridge, which existed until the mid-1960s. (You could even argue for Route 99's Stockton-Sacramento stretch here as it was "Temporary I-5" for some years!)
In Virginia, I-81 and US 11 are concurrent between Exits 73 and 89 (Wytheville to Pulaski) and Exits 167 and 175 (Buchanan and Natural Bridge)
And, how many times are US 1 and I-95 concurrent in there run. (Just a quick look at Connecticut found two.)
US 20 and NY 5 multiplex from Silver Creek to Brant and then again from Avon to Auburn.
Quote from: mightyace on December 25, 2009, 07:28:12 PM
And, how many times are US 1 and I-95 concurrent in there run. (Just a quick look at Connecticut found two.)
I suspect fewer than one would think, as I-95 usually (though not always) has many spots where it serves basically as a toll alternative to US 1, when they run parallel. (Also, of course, US 1 going inland north of Jacksonville affects how often 95 and 1 run close by.)
1. George Washington Bridge, Fort Lee to The Bronx
2. Old Lyme, CT
3. Gold Star Memorial Bridge, New London, CT
4. Dedham, MA along Route 128 (wrong way concurrency to get US 1 northbound to I-93 northbound/Route 128 southbound)
Wow, that's it!
QuoteIn Virginia, I-81 and US 11 are concurrent between Exits 73 and 89 (Wytheville to Pulaski) and Exits 167 and 175 (Buchanan and Natural Bridge)
But, as I noted earlier, not as many as the three concurrencies between I-64 and US 60 within Virginia...two west of Lexington and one on the HRBT.
QuoteAnd, how many times are US 1 and I-95 concurrent in there run. (Just a quick look at Connecticut found two.)
As Mr. Sampang noted, not as many as you'd otherwise expect. In no small part because the two routes run on completely different corridors between Petersburg, VA and Jacksonville, FL.
Quote from: froggie on December 25, 2009, 09:54:59 PM
In no small part because the two routes run on completely different corridors between Petersburg, VA and Jacksonville, FL.
Further up north, there are two lengthy areas where 95 and 1 diverge significantly as well:
- New London, CT to Providence, RI
- Portland, ME to Bangor, ME
Quote from: xonhulu on December 25, 2009, 01:46:58 PM
QuoteIf you count CA/OR/WA99 as a single continuous route (which it isn't anymore, I know), you'd have a good number between it and I-5: Sacramento, Red Bluff to Ashland, Central Point to Gold Hill, Grants Pass to Myrtle Creek, Myrtle Creek to Winston, Oakland to Yoncalla, Curtin to Cottage Grove, Goshen to Eugene, (OR99E: Albany to Salem), Portland to Vancouver (assuming old surface routing through Vancouver to Hazel Dell), Hazel Dell/Salmon Creek to Tacoma (not counting Bus I-5 in Centralia...): 11 concurrencies
This is a stretch, or could at best be considered a historical high. OR 99 probably can be considered still a continuous route, albeit unsigned when it's on I-5. Also, even though ODOT has those routes in Douglas County on the books, the roads are no longer state-maintained and the county doesn't sign OR 99 on them. However, the directional signage on the freeway still identifies them as OR 99, so I still consider them OR 99. I can also buy 99E being part of 99, so I'd agree you can count all the Oregon ones plus the Sacramento concurrency with CA 99, but the rest aren't legit anymore, so this is at best 8 concurrencies by my count.
Going on the idea of "historical high", we'd probably have to be in the mid-1960s for this to work:
I-5/US 99 would run together between Los Angeles (Interstate 10/San Bernardino Freeway) and Wheeler Ridge, then...the first years of the Route 99/I-5 concurrency in downtown Sacramento (unless you want to count Temp I-5 and Route 99 between Stockton and Sacramento), followed by the aforementioned Oregon and Washington examples. If we include BC 99 as part of the route, then that would also put the Everett-Blaine routing back on the list.
Not sure what the final total for that would be.
----
US 40 and I-70...
1. Empire, CO to Limon, CO through Denver
2. Oakley, KS to Topeka, KS
3. Bonner Springs, KS to I-70 Exit 6 in Kansas City, MO (passing through downtown)
4. I-70 Exit 24 in Grain Valley, MO (near East Kansas City Airport) to Exit 101 in Boonville, MO
5. I-70 Exit 121 west of Columbia, MO to I-70 Exit 210B in Wentzville, MO (at I-64)
6. St. Louis, MO at I-70 Exit 251A across the Poplar Street Bridge to I-70/I-55 Exit 17 in Troy, IL
7. Highland, IL at I-70 Exit 30 to Pocahontas, IL at I-70 Exit 36
8. I-70 Exit 154 east of Weaver, IL to I-70 Exit 1 near West Terre Haute, IN
9. I-70 Exit 186 in Old Washington, OH (at Route 285) to Exit 204 in Morristown, OH
10. I-70 Exit 0 on Wheeling Island to Exit 1
11. I-70 Exit 1A in Hancock, MD (at I-68) to Exit 11 near Pecktonville, MD
12. I-70 Exit 56 in Frederick, MD to Exit 82 in Turf Valley, MD
So 12 (Andy's count was spot-on) probably takes the cake nationally, though US 30/I-84 in Oregon seems to be the most within one state, with 8.
I wasn't even counting the LA-Wheeler Ridge or the Stockton concurrencies simply because there isn't a Baja CA 99... ;)
Quote from: Bickendan on December 26, 2009, 05:05:33 AM
I wasn't even counting the LA-Wheeler Ridge or the Stockton concurrencies simply because there isn't a Baja CA 99... ;)
IIRC, MX 57/US 57 (which was originally Texas 57) is the ONLY international number continuance from the US to Mexico, while US to Canada has many examples of this (395, 95, 93, 99, 97, 59, 75).
WRT 99 - during the time of I-5's construction, would that have been the clear winner in California? At least two of the US 101/Route 1 concurrencies (the Ventura-area routings) only came about once the southern segment of Route 1 was renumbered from previous designation as US 101A. (Previously, that had been the original Route 3.)
Here's a historical on I think will take the cake: US66 and I-40. If Bus I-40 is taken to be a historical routing for US 66, we have a good number of them. Let's see.
Diverging alignments: California - 2; 1 Bus I-40. (Between Barstow and Needles; Needles itself)
Arizona - 10, 8 Bus I-40
New Mexico - 6 Bus I-40
Texas - 7 Bus I-40
Oklahoma - 6 Bus I-40 before Oklahoma City.
Rough alignment split estimate: 31
Quote from: TheStranger on December 26, 2009, 02:06:34 AM
US 40 and I-70...
1. Empire, CO to Limon, CO through Denver
2. Oakley, KS to Topeka, KS
3. Bonner Springs, KS to I-70 Exit 6 in Kansas City, MO (passing through downtown)
4. I-70 Exit 24 in Grain Valley, MO (near East Kansas City Airport) to Exit 101 in Boonville, MO
5. I-70 Exit 121 west of Columbia, MO to I-70 Exit 210B in Wentzville, MO (at I-64)
6. St. Louis, MO at I-70 Exit 251A across the Poplar Street Bridge to I-70/I-55 Exit 17 in Troy, IL
7. Highland, IL at I-70 Exit 30 to Pocahontas, IL at I-70 Exit 36
8. I-70 Exit 154 east of Weaver, IL to I-70 Exit 1 near West Terre Haute, IN
9. I-70 Exit 186 in Old Washington, OH (at Route 285) to Exit 204 in Morristown, OH
10. I-70 Exit 0 on Wheeling Island to Exit 1
11. I-70 Exit 1A in Hancock, MD (at I-68) to Exit 11 near Pecktonville, MD
12. I-70 Exit 56 in Frederick, MD to Exit 82 in Turf Valley, MD
So 12 (Andy's count was spot-on) probably takes the cake nationally, though US 30/I-84 in Oregon seems to be the most within one state, with 8.
There would be an additional one in CO as they separate through Denver, I believe.
--Andy
Quote from: andytom on December 26, 2009, 03:21:01 PM
There would be an additional one in CO as they separate through Denver, I believe.
--Andy
Oh yeah, Colfax Avenue with Business I-70 and US 287. So that makes it 13!
Bickendan: With regards to 66/40, I think it also depends on how fast each state decomissioned 66 - in California, 66 survived early into the Interstate era (judging from 1960s co-signage with 91/395 and I-15 in Cajon that I've seen photos of, as well as the greened out 40/66 sign in Barstow on I-15) but not much longer than that, while it still existed in Oklahoma and certain points west as late as 1982.
The Garden State Parkway and US 9 are concurrent 3 times together in South Jersey, if you count the Beesley's Point Bridge detour as one.
Quote from: TheStranger on December 26, 2009, 03:24:33 PM
Quote from: andytom on December 26, 2009, 03:21:01 PM
There would be an additional one in CO as they separate through Denver, I believe.
--Andy
Oh yeah, Colfax Avenue with Business I-70 and US 287. So that makes it 13!
Bickendan: With regards to 66/40, I think it also depends on how fast each state decomissioned 66 - in California, 66 survived early into the Interstate era (judging from 1960s co-signage with 91/395 and I-15 in Cajon that I've seen photos of, as well as the greened out 40/66 sign in Barstow on I-15) but not much longer than that, while it still existed in Oklahoma and certain points west as late as 1982.
US 66 was decommed in 1985.
California truncated 66 to Pasadena (from Santa Monica) in 1964, and then to the Arizona state line at Topock in 1974.
Quote from: agentsteel53 on December 26, 2009, 05:18:27 PM
California truncated 66 to Pasadena (from Santa Monica) in 1964, and then to the Arizona state line at Topock in 1974.
Since Arizona's last decomissioning of 66 came in 1985...I would assume the peak of co-routing with 40 would be somewhere in the early 1970s. Didn't Illinois truncate its portion about the same time California did, though?
Illinois started truncating in 1976. By 1980, Missouri had joined in on the fun and the route was truncated to Joplin.
http://www.usends.com/60-69/066/066.html
I-10/U.S. 90 from TX to FL
I-20/U.S. 80 from TX to AL
I-55/U.S. 51 from LA to MS
I-55/U.S. 61 from AR to MO
I-59/U.S. 11 from LA to AL
Quote from: Annunciation70130 on December 27, 2009, 07:12:52 AM
I-10/U.S. 90 from TX to FL
1. San Antonio east to Seguin
2. Columbus to Brookshire
3. Katy to I-610 in east Houston
4. Beaumont to Vinton, LA
5. I-10 Exit 26 to 31B in Lake Charles
East of Lake Charles, they generally run on seperate alignments, even when parallel.
Quote
I-20/U.S. 80 from TX to AL
1. Marshall to Waskom
2. Delta, LA to Clinton, MS
3. I-20 Exit 129 to I-20/59 Exit 154B in Meridian, MS
Quote
I-55/U.S. 51 from LA to MS
1. I-10 north to Ponchatoula, LA
2. Crystal Springs, MS to Jackson
Quote
I-55/U.S. 61 from AR to MO
1. Exit 12B in Memphis north to Turrell, AR
2. Steele, MO to Portageville, MO
3. Scott City, MO to Cape Girardeau
Quote
I-59/U.S. 11 from LA to AL
1. Pearl River, LA to Picayune, MS
2. I-20/59 Exit 150 to Exit 154B in Meridian, MS
3. I-20/59 Exit 97 in Caffee Junction, AL to Exit 108 in Bessemer, AL
Has anyone mentioned I-91 and US-5 yet?
Quote from: Truvelo on December 28, 2009, 03:28:54 PM
Has anyone mentioned I-91 and US-5 yet?
Apparently, according to Wikipedia, the routes are only co-signed for a half-mile in Springfield, MA. (They run immediately parallel - but not on the same alignment - in Hartford where the Wilbur Cross Highway turns to the northeast.)
Earlier in this thread, I-80/US 30 was mentioned...here's their concurrencies:
1. Little America, WY at I-80 Exit 66 to I-80 Exit 235
2. Laramie, WY at I-80 Exit 316 to I-80 Exit 358 in Cheyenne
3. Cheyenne at I-80 Exit 370 to I-80 Exit 401 in Pine Bluffs, WY
However, in Nebraska the routes run closely parallel - but never together - until Grand Island, NE, at which point US 30 and I-80 take divergent paths to Joliet, IL. They cross in Joliet, and then never intersect again.
Quote from: TheStranger on December 28, 2009, 03:33:43 PM
Quote from: Truvelo on December 28, 2009, 03:28:54 PM
Has anyone mentioned I-91 and US-5 yet?
Apparently, according to Wikipedia, the routes are only co-signed for a half-mile in Springfield, MA. (They run immediately parallel - but not on the same alignment - in Hartford where the Wilbur Cross Highway turns to the northeast.)
and the only reason US5 is concurrent on 91 is that one road ends at 91 and the other road US 5 rides on picks up a half-mile later...
Would I-91 and US 5 be unusual for closely paralleling routes with only one concurrency between them?
Quote from: ctsignguy on August 06, 2010, 08:44:17 PM
Quote from: TheStranger on December 28, 2009, 03:33:43 PM
Quote from: Truvelo on December 28, 2009, 03:28:54 PM
Has anyone mentioned I-91 and US-5 yet?
Apparently, according to Wikipedia, the routes are only co-signed for a half-mile in Springfield, MA. (They run immediately parallel - but not on the same alignment - in Hartford where the Wilbur Cross Highway turns to the northeast.)
and the only reason US5 is concurrent on 91 is that one road ends at 91 and the other road US 5 rides on picks up a half-mile later...
Would I-91 and US 5 be unusual for closely paralleling routes with only one concurrency between them?
The road I can think of that might have even fewer would be US 11 with any of its parallel interstates (59, 24, 75, 40, 81). I'll check via Google Maps and edit this post afterward...
I-59:
1. from I-59 Exit 3 in Pearl River, LA to I-59 Exit 1 in Nicholson, MS
2. from I-59/I-20 Exit 150 in Meridian, MS to I-59/I-20 Exit 154
3. from I-59/I-20 Exit 97 in Lake View, AL to I-59/I-20 Exit 108 in Bessemer
I-75:
1. I-75 Exit 7A in Chattanooga to I-75 Exit 11 in Ooltewah, TN
I-81:
1. I-81/I-77 Exit 73 in Wytheville, VA to I-81 Exit 89A
2. I-81 Exit 167 northeast of Roanoke to I-81 Exit 175
However, 11 does diverge from 81 significantly between Harrisburg and Wilkes-Barre, and of course past Watertown, NY.
Here's a variation: US 93/95.
They duplex from between Boulder City and Henderson to Las Vegas (with I-515 joining in on the fun), and again in British Columbia for a long duplex north of Cranbrook to Radium Hot Spring as BC 93/95 -- after both have a decent duplex with BC 3!
So what's the longest distance between a concurrency?
Quote from: Bickendan on August 07, 2010, 12:34:12 AM
Here's a variation: US 93/95.
They duplex from between Boulder City and Henderson to Las Vegas (with I-515 joining in on the fun), and again in British Columbia for a long duplex north of Cranbrook to Radium Hot Spring as BC 93/95 -- after both have a decent duplex with BC 3!
So what's the longest distance between a concurrency?
The 93/95 double-pair is separated by 1,183 miles of US/BC 93 and 1,288 miles of US/BC 95, probably a record worldwide!
Within one country, the US 26/30 gap between concurrencies (from Bliss, ID to Ogallala, NE) is 815 miles or so on US 30, and 857 miles via US 26.
U.S. 80 duplexes with I-20 twice in Mississippi: from Clinton to Vicksburg and in the Meridian area.
No longer a recurring concurrency, but US 60 and 70 used to have three between Los Angeles and New Mexico:
1. from US 101 at the San Bernardino Split in Los Angeles to today's Holt Avenue exit off of I-10 in Pomona
2. from today's Route 60/I-10 junction in Beaumont to Globe, AZ via Phoenix
3. the only remaining one (537 miles away from Globe via US 60, 572 miles from Globe via US 70), from Clovis, NM to Texico, NM
Quote from: golden eagle on August 07, 2010, 01:12:40 AM
U.S. 80 duplexes with I-20 twice in Mississippi: from Clinton to Vicksburg and in the Meridian area.
Actually 80 is duplexed with I-20 from Clinton MS to near Tallulah, LA
I-39 and US 51. practically are on top of each other. They run concurrent from Bloomington to Beloit (where 51 jumps off and goes through Beloit and Janesville while 39 follows 20 to 90 up to Portage bypassing the cities. 51 breifly joins 39/90 from Ellsworth to Stoughton, then rejoins 39 at Portage for the rest of the way up to Wausau.
I-43 and WIS 32 have two concurrencies in Wisconsin. First is from Brown Deer to CTH V (Exit 93) where 32 veers off NE to Port Washington as a "business route" of sort. It rejoins at CTH HH (Exit 100) north of Port Washington and gets off at Cedar Grove (south of Sheboygan)
WIS 32 and WIS 57 also have two concurrencies (the first being on I-43 and the second further north - from Keil to De Pere (south of Green Bay)
US 12 and US 20 from Bellwood, IL to East Chicago, IN (they go under the Skyway) in Gary IN.
I-94 and US 41 from Milwaukee to Waukegan (IL) and briefly on the Edens Expwy from Northbrook to Glenview. The first concurrency was extended from the Milwaukee/Racine county line to Miller Park after the stadium was built.
US 6 and 44 have at least 3 concurrencies I am aware of...
Pretty much unsigned as US 44 joins up with I-84/US 6 in downtown Hartford while crossing the Connecticut River where 44 jumps back off to wander through E Hartford...rejoins US 6 at Manchester Main St exit on I-84 (US 6 joins up this time)...they split east of Manchester just beyond the end of I-384 (Bolton)
US 44 rejoins US 6 on I-295's Exit 2 in Providence RI, then they part at Exit 4 as 44 heads east to Plymouth Harbor MA...
Are these recurring in the same state?
Separate states, there's US 67 along I-30 between Dallas & Saltillo, Texas; also along I-30 in Arkansas from Benton to I-40 in North Little Rock.
Well, this one came to me, but I-15/US-89 along the Wasatch Front have just 2 of these; the first from Lehi to State St. in Salt Lake County, the other, from North Salt Lake to Farmington. I could've swore that there were more.
Quote from: US71 on August 07, 2010, 11:01:27 AM
Are these recurring in the same state?
Separate states, there's US 67 along I-30 between Dallas & Saltillo, Texas; also along I-30 in Arkansas from Benton to I-40 in North Little Rock.
It's actually Weaver, not Saltillo.
US 1, US 15, US 501 multiplex twice in NC: Sanford NC and Aberdeen NC.
Quote from: Master son on August 07, 2010, 07:43:16 AM
I-94 and US 41 from Milwaukee to Waukegan (IL) and briefly on the Edens Expwy from Northbrook to Glenview. The first concurrency was extended from the Milwaukee/Racine county line to Miller Park after the stadium was built.
I-94 and US 41 also runs concurrently from Calumet Avenue to Indianapolis Blvd. on the Borman Expressway in Indiana.
US 6 and US 20 have three concurrencies in Ohio--two separate segments in Cleveland and along the bypass around Freemont.
US 6 and US 322 also run concurrent in Cleveland, OH as well as in western PA between Conneaut Lake and Meadville.
US 6 and US 34 have 3 separate concurrencies: from E. of Wiggins to W. of Ft. Morgan in Colorado(along with I-76), from W. of Culbertson to Hastings in Nebraska, and from Sheffield to Princeton in Illinois.
US-41 and M-26 are concurrent twice in the UP. Once across the Portage Lake Lift Bridge, then from Larium to Pheonix. Then M-26 ends at US-41 in Copper Harbor.
US-6 and IL-7 are never truely concurrent, but meet and bounce a couple of times. IL-7 starts at US-6 in Rockdale, then bounces with US-6 in Orland Park.
US-61 and US-63 between Red Wing and Lake City, MN...and then again along I-55 northwest of Memphis.
About 750 miles apart.
US 74 and US 76 multiplex from Whiteville, NC to Wilmington split for a short time there and then get back together before splitting at Wrightsville Beach.
Quote from: 74/171FAN on August 09, 2010, 04:40:54 PM
US 74 and US 76 multiplex from Whiteville, NC to Wilmington split for a short time there and then get back together before splitting at Wrightsville Beach.
For that matter, when US 74 took over the old US 19A near the Great Smoky Mountains (which occurred ca. 1987), this created three concurrencies for US 74 and US 19: the first through the Nantahala National Forest, the second from Lake Junaluska to Clyde, and the third from I-40 Exit 44 in Enka to the I-240/I-26 junction.
This might be the most concurrencies worldwide of any two roads signed for perpendicular cardinal directions, along with I-85 and US 70! (85 and 70 run together from I-85 Exit 82 north of Spencer to Exit 87 in Lexington, I-85 Exit 118 to Exit 120B in Greensboro, and I-85 Exit 170 to Exit 178 in Durham)
Might have already been mentioned, but I-25 and US-87 are concurrent through all of Colorado, and I-70 and US-6 have many concurrences throughout the state, as well. I believe in both cases, the US routes are no longer officially signed, at least in places.
Quote from: Quillz on August 31, 2010, 01:00:35 PM
Might have already been mentioned, but I-25 and US-87 are concurrent through all of Colorado, and I-70 and US-6 have many concurrences throughout the state, as well. I believe in both cases, the US routes are no longer officially signed, at least in places.
US 6 and I-70:
1. Green River, UT to Grand Junction, CO
2. Grand Junction, CO to Dillon, CO
3. I-70 Exit 216 to I-70 Exit 244
4. I-25/I-70 junction in Denver to US 85 (Vasquez Boulevard)
US 87 and I-25:
1. Raton, NM to Colorado Springs
2. Colorado Springs to Buffalo, WY (at I-90)
Is 25/87 the longest concurrency in the US? (Albeit, not the longest signed one)
Quote2. Colorado Springs to Buffalo, WY (at I-90)
Nope-the whole US-87 follows interstates the whole way through Wyoming myth is a weird one that somehow developed that I will perpetually try to nip in the butt. US-87 follows 20/26 from Casper to Glenrock, deviating from I-25, so the concurrency is only Glenrock to Raton- which is up there, but not as long as US-85 from Fountain, Colorado to Las Cruces with I-25. It also leaves I-90 from just north of Buffalo to Sheridan, but that's another taco.
East of Casper
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.davidjcorcoran.com%2Fhighways%2Fwy%2F20%2F25to258%2F1.jpg&hash=8daa4c74d1ad105c68054384289ea955ebc8fc6c)
East of Glenrock
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.davidjcorcoran.com%2Fhighways%2Fwy%2F25glenrock%2F90to25%2F1.jpg&hash=6ff22c596ba3fe076e0196566e10a343a7adcfe4)
Quote from: corco on August 31, 2010, 01:46:10 PM
Quote2. Colorado Springs to Buffalo, WY (at I-90)
Nope- US-87 follows 20/26 from Casper to Glenrock, deviating from I-25, so the concurrency is only Glenrock to Raton-
Thanks! Google Maps seems to show it being on 25 a lot more than it actually is, particularly in Wyoming.
QuoteThanks! Google Maps seems to show it being on 25 a lot more than it actually is, particularly in Wyoming.
Yeah- the routing within Wyoming of US-87 is really complicated- too complicated for Google. I've shown them massive amounts of photographic evidence (including their own street view images!) to get them to change it (where it splits from I-90 too), but thus far they have not. Given that ~nobody navigates by US-87 anymore, I can't imagine it's high on their priority list.
California has the infamous wrong-way concurrency of I-80 and I-580. And then there are many implied concurrences with US-101 and CA-1. In almost all cases, you'll find the latter isn't signed but its mileage continues to increase, as opposed to a route, such as CA-65, that has two segments with officially defined start and end points. Around Ventura, for example, CA-1 appears to terminate onto US-101, but in fact it has a concurrency for a few miles. Then the two come together again and break off north of the Point Conception bend, yet in between that implied concurrency isn't signed in any way.
Quote from: Quillz on August 31, 2010, 01:56:08 PM
California has the infamous wrong-way concurrency of I-80 and I-580. And then there are many implied concurrences with US-101 and CA-1. In almost all cases, you'll find the latter isn't signed but its mileage continues to increase, as opposed to a route, such as CA-65, that has two segments with officially defined start and end points. Around Ventura, for example, CA-1 appears to terminate onto US-101, but in fact it has a concurrency for a few miles. Then the two come together again and break off north of the Point Conception bend, yet in between that implied concurrency isn't signed in any way.
I actually mentioned 1/101 on the very first post of this thread:
https://www.aaroads.com/forum/index.php?topic=2152.msg48083#msg48083
They have four concurrencies:
- Exit 62B in Ventura northwest to the "Pacific Coast Highway" exit approximately mile marker 7
- Exit 78 northwest to Exit 132 in Gaviota via Santa Barbara
- Exit 191A in Pismo Beach to milemarker 204 in San Luis Obispo
- San Francisco Presidio north across the Golden Gate Bridge to Sausalito/Marin City
Quote from: TheStranger on August 09, 2010, 05:17:36 PMFor that matter, when US 74 took over the old US 19A near the Great Smoky Mountains (which occurred ca. 1987), this created three concurrencies for US 74 and US 19: the first through the Nantahala National Forest, the second from Lake Junaluska to Clyde, and the third from I-40 Exit 44 in Enka to the I-240/I-26 junction.
This might be the most concurrencies worldwide of any two roads signed for perpendicular cardinal directions, along with I-85 and US 70! (85 and 70 run together from I-85 Exit 82 north of Spencer to Exit 87 in Lexington, I-85 Exit 118 to Exit 120B in Greensboro, and I-85 Exit 170 to Exit 178 in Durham)
US1 & ME9 also have three separate multiplexes. One in Wells and another from Scarborough to South Portland. These two, 9 East = 1 North. The last `plex is from Baileyville to Calais, where 9 East = 1 South