I couldn't find that this topic has already been covered on the forum (apologies if it has been).
Interstate 77 and WV Route 2 are concurrent from Silverton to Parkersburg (http://goo.gl/BDiz4b) (about 34 miles). I'm imagining that it is rather rare to have a concurrency that long with a state route. Are there any other examples in the country like this?
How long (legally) is that I-95/Rt. 128 concurrency in the Boston area? That might be a contender.
The winner will be I-86 and NY 17 at hundreds of miles.
Mapmikey
I assume you skip Georgia where every Interstate has a hidden State Route concurrency?
I-290, I-88, I-172, and I-74 all are concurrent with IL-110.
CT doesn't have a single instance (unless you believe CONNDOT, who put up CT 6 signs instead of US 6 in Farmington and West Hartford
Quote from: Big John on February 11, 2015, 08:42:20 AM
I assume you skip Georgia where every Interstate has a hidden State Route concurrency?
When fully finished I-86/NY 17 would be longer than the longest Georgia interstate (I-75) but still shorter than I-75 in Florida which also has secret state routes on its interstates. But to be fair Georgia at least used to put the 4xx number in small numbers at the bottom of the interstate
route mile markers...
Mapmikey
I can't think of a single instance in New Jersey, unless you want to count the Turnpike's hidden designation, which I'm pretty sure doesn't count.
Twice:
Ohio State Route 2 is concurrent with I-90 for about 17 miles in the western suburbs of Cleveland. Then just east of downtown, Route 2 connects back up with I-90 for another 10 miles through the east side.
Quote from: jp the roadgeek on February 11, 2015, 09:48:38 AM
CT doesn't have a single instance (unless you believe CONNDOT, who put up CT 6 signs instead of US 6 in Farmington and West Hartford
There is one tiny (0.52 mile) overlap, which the highway log confirms. Hint: the ratio of route numbers is 7:6.
^I-84 and CT-72
Quote from: Zeffy on February 11, 2015, 09:51:21 AM
I can't think of a single instance in New Jersey, unless you want to count the Turnpike's hidden designation, which I'm pretty sure doesn't count.
Which wouldn't even count if we were including hidden designations. The Turnpike is only 700 where it's not 95.
But you're forgetting the northernmost mile of I-287, concurrent with NJ 17.
Quote from: The Nature Boy on February 11, 2015, 07:45:56 AM
How long (legally) is that I-95/Rt. 128 concurrency in the Boston area? That might be a contender.
Just over 37 miles from Canton (Exit 12) to Peabody (Exit 45).
Quote from: Zeffy on February 11, 2015, 09:51:21 AM
I can't think of a single instance in New Jersey, unless you want to count the Turnpike's hidden designation, which I'm pretty sure doesn't count.
NJ 173 does near Clinton for a short stretch with I-78
Not all of them are long, but here's a few Interstate/SR concurrencies I'm aware of.
I-510 and LA 47
I-49 and LA 28
I-49 and MO 7
I-49 and MO 52
I-470 and MO 291
I-635 and K-5
I-70 and K-4
California's state route/Interstate concurrencies:
Interstate 5
(former: Route 75 from Exit 3 in San Ysidro to Exit 5 near Imperial Beach)
(former: Route 134 from Exit 142 near Glendale to Exit 145B)
(former: Route 126 from Exit 170 in Santa Clarita to Exit 172)
Route 33 from Exit 337 north of Coalinga to Exit 349
Route 4 from Exit 471 in Stockton to Exit 472
[gap in Route 16 from Exit 518 in Sacramento to exit 541 in Woodland]
Route 99 from Exit 518 in Sacramento to Exit 525B
Route 113 from Exit 537 in Woodland to Exit 538
(former: Route 299 from Exit 678B in Redding to Exit 680)
unsigned Interstate 305
Route 99 [and gap in Route 16] from Exit 4 in Sacramento to Exit 6B
depending on FHWA definition...could also include Route 51 from Exit 6B in midtown Sacramento to Exit 7B
Interstate 405
Route 22 from Exit 21 in Seal Beach to Exit 23
Interstate 8
(former: Route 67 from Exit 14C in La Mesa to Exit 17B in El Cajon)
Interstate 15
Route 79 from Exit 58 in Temecula to Exit 61
Route 18 from Exit 150 in Victorville to Exit 153A
Interstate 215
Route 74 from Exit 15 in Romoland to Exit 17 in Perris
Route 60 from Exit 29 in Moreno Valley to Exit 34B in Riverside
Interstate 80
(former: Route 17 from the Macarthur Maze in Oakland north to Exit 13B in Albany)
Route 12 from Exit 39B in Cordelia to Exit 43 in Fairfield
Route 113 from Exit 66 in Dixon to exit 70 in Davis
[gap in Route 193 from Exit 116 in Newcastle to Exit 119A in Auburn]
Route 89 from Exit 185 in Truckee to Exit 188B
Interstate 280
(former: Route 17 along today's 880 in San Jose (between 280 and 101))
(former: Route 85 from Exit 11 in Cupertino to Exit 12B)
Route 35 from Exit 34 in San Mateo to Exit 41 in San Bruno
Route 1 from Exit 47 in Daly City to Exit 49B (originally planned to continue into the SF Presidio)
Interstate 680
(former: Route 17 along today's 880 between 101 in San Jose and 262 in Fremont)
Route 84 (eastbound only) from northbound Exit 21A in Sunol to Exit 21B
(former: Route 24 from Exit 46A in Walnut Creek to Exit 50 in Concord)
Interstate 880
Route 84 from Exit 19 in Fremont to Exit 21
I-81/PA 309 in the Wilkes Barre area, I-78/PA 309 in the Allentown area, and I-99/PA 26 in the Bellefonte area are a few that come to mind.
OR 99 has 85 miles with I-5, and adding OR 99E, it comes to 109 miles.
CA 99 pulls 7 miles with I-5, and 1 on US 50 (Bus I-80/I-305).
CA 16 unofficially clocks 23 miles on I-5 and 1 on Bus I-80/I-305 (and 8 on CA 99 and 3 on US 50), but officially it's discontinuous between both ends of the overlap.
CA 51 (completely unsigned) is with Bus I-80 for its entire 9 miles, with less than a mile with I-305.
California most likely has a few others scattered about (CA 35 and I-280?), but the Sacramento ones are the big ones.
Aside from the fore-mentioned I-95/MA 128, here are a few other Interstate/State route concurrencies in the Bay State:
I-93 (O'Neill Tunnel & Southeast Expressway) w/MA 3 (& US 1)
I-495 & MA 140 in Mansfield (though 140 only runs along the C/D roads)
I-195 & MA 24 in Fall River
I-91 & MA 2 in Greenfield
Quote from: Bickendan on February 11, 2015, 12:59:32 PM
CA 99 pulls 7 miles with I-5, and 1 on US 50 (Bus I-80/I-305).
CA 16 unofficially clocks 23 miles on I-5 and 1 on Bus I-80/I-305 (and 8 on CA 99 and 3 on US 50), but officially it's discontinuous between both ends of the overlap.
CA 51 (completely unsigned) is with Bus I-80 for its entire 9 miles, with less than a mile with I-305.
California most likely has a few others scattered about (CA 35 and I-280?), but the Sacramento ones are the big ones.
I think the longest might actually be the rather underwhelming Route 33/I-5 concurrency north of Coalinga, at 12 miles.
Minnesota:
I-35/MN 23 (11 miles; 180-191)
I-90/MN 43 (3 miles; 249-252)
I-94/MN 55 (4 miles; 230-234)
I-94/MN 95 (5 miles; 253-258)
I-94/MN 210 (3 miles; 54-57)
I-494/MN 5 (10 miles; 1A-11C)
Quote from: TheStranger on February 11, 2015, 01:16:10 PM
Quote from: Bickendan on February 11, 2015, 12:59:32 PM
CA 99 pulls 7 miles with I-5, and 1 on US 50 (Bus I-80/I-305).
CA 16 unofficially clocks 23 miles on I-5 and 1 on Bus I-80/I-305 (and 8 on CA 99 and 3 on US 50), but officially it's discontinuous between both ends of the overlap.
CA 51 (completely unsigned) is with Bus I-80 for its entire 9 miles, with less than a mile with I-305.
California most likely has a few others scattered about (CA 35 and I-280?), but the Sacramento ones are the big ones.
I think the longest might actually be the rather underwhelming Route 33/I-5 concurrency north of Coalinga, at 12 miles.
That... sounds about right.
How about the US 101/CA 1 pairings?
Quote from: Bickendan on February 11, 2015, 02:11:48 PM
Quote from: TheStranger on February 11, 2015, 01:16:10 PM
Quote from: Bickendan on February 11, 2015, 12:59:32 PM
CA 99 pulls 7 miles with I-5, and 1 on US 50 (Bus I-80/I-305).
CA 16 unofficially clocks 23 miles on I-5 and 1 on Bus I-80/I-305 (and 8 on CA 99 and 3 on US 50), but officially it's discontinuous between both ends of the overlap.
CA 51 (completely unsigned) is with Bus I-80 for its entire 9 miles, with less than a mile with I-305.
California most likely has a few others scattered about (CA 35 and I-280?), but the Sacramento ones are the big ones.
I think the longest might actually be the rather underwhelming Route 33/I-5 concurrency north of Coalinga, at 12 miles.
That... sounds about right.
How about the US 101/CA 1 pairings?
The segment of US 101/Route 1 from Hobson County Park west of Ventura (at US 101 Exit 78) to Gaviota (at US 101 Exit 132) might be the longest single concurrency in the state, 52.5 miles long.
Prior to 1981 (when Route 1 was given a standalone routing to Hobson County Park), the concurrency went even further east/south to Oxnard at US 101 Exit 62B, for a total of 68.9 miles.
Total length the two routes run together:
1. Oxnard to Ventura (Exit 72) - 10 miles
2. the aforementioned 52.5 mile Hobson County Park to Gaviota segment, 52.5 miles
3. Exit 191B in Pismo Beach to Exit 203A in San Luis Obispo, 12 miles
4. San Francisco Presidio at Exit 438 to Exit 445B in Sausalito, 5.8 miles
80.3 miles concurrent, previously 96.7 miles.
Virginia has a few of these. I-64 has a lengthy concurrency with VA 33, and shorter ones with VA 134 and VA 168. I-264 has a brief multiplex with VA 337, and I-66 has concurrencies with VA 55 and VA 234.
Quote from: akotchi on February 11, 2015, 12:28:37 PM
I-81/PA 309 in the Wilkes Barre area, I-78/PA 309 in the Allentown area, and I-99/PA 26 in the Bellefonte area are a few that come to mind.
The I-99/US 220/PA 26 one is interesting...an Interstate/US Route/State Route concurrency. I-90/US 14/SD 79 listed below also meets that test, as does I-86/US 219/NY 17 (with the 86/17 mentioned previously)
Adding more PA to this:
-I-80/PA 66 near Clarion
More New York:
-I-81/NY 17 in Binghamton
-I-84/NY 52 near Newburgh
-I-88/NY 7 near Binghamton
-I-87/NY 7 near Albany (North 87 only)
-I-790/NY 5-8-12 in Utica
-I-88/NY 28 in Oneonta
-I-190/NY 324 over the South Grand Island Bridge
-I-278/NY 440 in Staten Island
-NOT NY 15 - Officially begins in Wayland despite signage that NY seems to keep putting up (Why doesn't NY just make NY 415 into NY 15?)
-Does NY 878/I-878 count? :D
Maryland and Delaware don't seem to have anything.
South Dakota I-90:
-With SD 34 from Exits 23-30 (Sturgis)
-With SD 79 from Exits 30-61 (Sturgis-Rapid City) (The way this has changed over time confuses me)
-With SD 73 from Exits 143-150 (Kadoka)
-With SD 63 from Exits 163-170 (Belvidere)
-With SD 50 from Exits 265-272 (Chamberlain)
-With SD 45 from Exits 284-289 (Kimball)
-With SD 37 from Exits 330-332 (Mitchell)
-NOT SD 47 - Runs Parallel
QuoteI-94/MN 55 (4 miles; 230-234)
This has been discussed before, but as best as I can tell from official MnDOT docs, there is no I-94/MN 55 concurrency (their logpoint certainly doesn't show such). So MN 55 has an official gap in downtown Minneapolis.
QuoteI-94/MN 95 (5 miles; 253-258)
I-94/MN 210 (3 miles; 54-57)
In light of sbeaver's comment on Interstate/US/state concurrencies, the former includes (unsigned) US 12 while the latter includes unsigned US 52 as well as signed US 59.
Quote from: froggie on February 11, 2015, 04:33:39 PM
QuoteI-94/MN 55 (4 miles; 230-234)
This has been discussed before, but as best as I can tell from official MnDOT docs, there is no I-94/MN 55 concurrency (their logpoint certainly doesn't show such). So MN 55 has an official gap in downtown Minneapolis.
I haven't had the chance to review the log, but in either case it is now signed at both the Hiawatha and Olson Memorial Highway junctions with I-94 that 55 joins 94 at those points. I guess it depends on whether you consider the log as a more official source than field signs, which is a valid perspective.
Quote from: Kacie Jane on February 11, 2015, 11:44:42 AM
But you're forgetting the northernmost mile of I-287, concurrent with NJ 17.
Eventually, the more I forget about this the more I'll actually start to remember it, considering it's one of maybe less than 5 occurrences in New Jersey...
Quote from: roadman65 on February 11, 2015, 12:09:56 PM
NJ 173 does near Clinton for a short stretch with I-78
[/quote]
It does? I could've sworn that 173 rode parallel to 78 most of the time, never with it.
Quote from: jp the roadgeek on February 11, 2015, 09:48:38 AM
CT doesn't have a single instance (unless you believe CONNDOT, who put up CT 6 signs instead of US 6 in Farmington and West Hartford
I-395 and CT-2A near Norwich. Not well signed (except from CT-2 EB) but it is official.
South of Greenville, SC, I-385 has a hidden multiplex with SC 14 for a few miles.
Quote from: kurumi on February 11, 2015, 11:05:27 AM
There is one tiny (0.52 mile) overlap, which the highway log confirms. Hint: the ratio of route numbers is 7:6.
There's also I-395/2A, which may not officially exist but is signed.
Florida's only signed one is SR 228 on I-10 and I-95.
Quote from: sbeaver44 on February 11, 2015, 02:54:08 PM
South Dakota I-90:
-With SD 34 from Exits 23-30 (Sturgis)
-With SD 79 from Exits 30-61 (Sturgis-Rapid City) (The way this has changed over time confuses me)
-With SD 73 from Exits 143-150 (Kadoka)
-With SD 63 from Exits 163-170 (Belvidere)
-With SD 50 from Exits 265-272 (Chamberlain)
-With SD 45 from Exits 284-289 (Kimball)
-With SD 37 from Exits 330-332 (Mitchell)
-NOT SD 47 - Runs Parallel
No, 79 just got shifted onto the interstate between exits 51-61 a few years ago when they got rid of the s-curve. They just haven't got round to signing it yet in places. Before that, 79's routing through Rapid was weird and hard to follow.
On 47, I don't see why it shouldn't be a concurrency. They could put 248 on the service road.
Iowa
I-380 and Iowa 27 - 71 1/2 miles
I-35 and Iowa 27 - 24 miles
Kansas
I-70 and K-4 - 13 miles
I-135 and K-4 - 4 miles
I-135 and K-15 - 28 miles
I-435 and K-5 - 2 miles
I-635 and K-5 - 1 mile
Missouri
I-35 and MO-110 - 41 miles
Montana
I-15 and MT-200 - 11 miles
I-90 and MT-200 - 13 miles
Quote from: rarnold on February 11, 2015, 09:21:28 PM
Iowa
I-380 and Iowa 27 - 71 1/2 miles
I-35 and Iowa 27 - 24 miles
And I-80 and Iowa 38 - 4 miles. I think that's it for the state.
Quote from: Big John on February 11, 2015, 08:42:20 AM
I assume you skip Georgia where every Interstate has a hidden State Route concurrency?
You can, however, count the entirety of I-575, which is also (fully signed) SR 5. That's about 30 miles.
Quote from: sbeaver44 on February 11, 2015, 02:54:08 PM
-NOT NY 15 - Officially begins in Wayland despite signage that NY seems to keep putting up (Why doesn't NY just make NY 415 into NY 15?)
They do it because it was once one continuous route and it makes more sense from a commoner's perspective to have one Route 15 than two completely separate ones in close proximity.
I bet they'll stop signing the concurrency when US 15 gets decommissioned north of Williamsport because it will no longer serve a practical purpose.
Which states don't have any? Not counting states already mentioned here:
*Alabama: I-359/SR 69
*Alaska: fuck you
*Arizona: I-17/SR 89A
*Arkansas: I-49/AR 12, I-49/AR 16
*Colorado: I-70/SH 9
*Delaware: none
*District of Columbia: fuck you
*Georgia: I-75/SR 7 from Valdosta to Hahira
*Hawaii: none
*Idaho: I-84/SH 55
*Illinois: I-55/I-64/IL 3
*Indiana: I-69/SR 37
*Kentucky: I-265/KY 841
*Louisiana: I-49/LA 8
*Maine: I-95/SR 15
*Maryland: nothing signed, but I-595/MD 2
*Massachusetts: I-91/Route 2
*Michigan: I-96/M-37
*Mississippi: I-59/MS 42
*Nebraska: I-80/N-71 (thanks DandyDan)
*Nevada: none
*New Hampshire: I-89/NH 10
*New Mexico: none
*North Carolina: I-277/NC 16
*North Dakota: I-94/ND 3
*Oklahoma: I-44/SH 66
*Oregon: I-5/OR 138
*Rhode Island: none
*South Carolina: I-385/SC 14 (well-signed, at least on SC 14 west) and I-585/SC 9 (though signage for I-585 is somewhat lacking)
*Tennessee: I-40/SR 56
*Texas: I-10/SH 17
*Utah: none, unless there's a sign somewhere for SR 30 on I-15 or I-84
*Vermont: none? (I-91/VT 9 doesn't exist)
*Washington: I-405/SR 900
*Wisconsin: I-94/WIS 35
*Wyoming: I-80/WYO 789
That's 40/50 states with something signed.
NH has I-293/NH 3A in Manchester, along with the previously mentioned I-89/NH 10 near Lebanon.
Maine has a few I can think of, 2 involving ME 15, overlapping with I-95 and I-395 in Bangor. Really small one with I-295/ME 26 in Portland.
I don't think there is anything in Vermont, US or state route, that is joined with an interstate.
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Which states don't have any? Not counting states already mentioned here:
*Michigan: I-96/M-37
Michigan also has I-75/M-55 west of West Branch, but I can't think of any other current ones at the moment.
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Which states don't have any? Not counting states already mentioned here:
*Alabama: I-359/SR 69
*Alaska: fuck you
*Arizona: I-17/SR 89A
*Arkansas: I-49/AR 12, I-49/AR 16
*Colorado: I-70/SH 9
*Delaware: none
*District of Columbia: fuck you
*Georgia: I-75/SR 7 from Valdosta to Hahira
*Hawaii: none
*Idaho: I-84/SH 55
*Illinois: I-55/I-64/IL 3
*Indiana: I-69/SR 37
*Kentucky: I-265/KY 841
*Louisiana: I-49/LA 8
*Maine: I-95/SR 15
*Maryland: nothing signed, but I-595/MD 2
*Massachusetts: I-91/Route 2
*Michigan: I-96/M-37
*Mississippi: I-59/MS 42
*Nebraska: none?
*Nevada: none
*New Hampshire: I-89/NH 10
*New Mexico: none
*North Carolina: I-277/NC 16
*North Dakota: I-94/ND 3
*Oklahoma: I-44/SH 66
*Oregon: I-5/OR 138
*Rhode Island: none
*South Carolina: I-385/SC 14 (well-signed, at least on SC 14 west) and I-585/SC 9 (though signage for I-585 is somewhat lacking)
*Tennessee: I-40/SR 56
*Texas: I-10/SH 17
*Utah: none, unless there's a sign somewhere for SR 30 on I-15 or I-84
*Vermont: none? (I-91/VT 9 doesn't exist)
*Washington: I-405/SR 900
*Wisconsin: I-94/WIS 35
*Wyoming: I-80/WYO 789
That's 40/50 states with something signed.
Others in Alabama:
I-20/59: AL-5 11 miles (Exits 97-108)
I-65: AL-69 5 miles (Exits 299-304)
Also I-22/SR 4, which is signed on intersecting roads at least.
Other Wisconsin:
I-94/WIS 164
I-39/90+WIS 11
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Which states don't have any? Not counting states already mentioned here:
*Alabama: I-359/SR 69
*Alaska: fuck you
*Arizona: I-17/SR 89A
*Arkansas: I-49/AR 12, I-49/AR 16
*Colorado: I-70/SH 9
*Delaware: none
*District of Columbia: fuck you
*Georgia: I-75/SR 7 from Valdosta to Hahira
*Hawaii: none
*Idaho: I-84/SH 55
*Illinois: I-55/I-64/IL 3
*Indiana: I-69/SR 37
*Kentucky: I-265/KY 841
*Louisiana: I-49/LA 8
*Maine: I-95/SR 15
*Maryland: nothing signed, but I-595/MD 2
*Massachusetts: I-91/Route 2
*Michigan: I-96/M-37
*Mississippi: I-59/MS 42
*Nebraska: none?
*Nevada: none
*New Hampshire: I-89/NH 10
*New Mexico: none
*North Carolina: I-277/NC 16
*North Dakota: I-94/ND 3
*Oklahoma: I-44/SH 66
*Oregon: I-5/OR 138
*Rhode Island: none
*South Carolina: I-385/SC 14 (well-signed, at least on SC 14 west) and I-585/SC 9 (though signage for I-585 is somewhat lacking)
*Tennessee: I-40/SR 56
*Texas: I-10/SH 17
*Utah: none, unless there's a sign somewhere for SR 30 on I-15 or I-84
*Vermont: none? (I-91/VT 9 doesn't exist)
*Washington: I-405/SR 900
*Wisconsin: I-94/WIS 35
*Wyoming: I-80/WYO 789
That's 40/50 states with something signed.
Montana has I-90/MT 200 as well as I-15/MT 200
South Dakota has I-90/SD 34/SD 79, among others.
Kansas has I-70/K-4, among others.
Cali has I-5/SR-113 among others.
Iowa has I-35/IA 27, among others?
Does Missouri have any? I can't think of any.
Quote from: corco on February 12, 2015, 12:33:25 AM
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Not counting states already mentioned here:
Does Missouri have any? I can't think of any.
I-35/Route 110 and I-72/Route 110. Also I-470/Route 291 if you (rightly) don't count 110 as a technicality. And Iowa has I-80/IA 38 if you ignore IA 27.
Quote from: bulldog1979 on February 11, 2015, 11:55:39 PM
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Which states don't have any? Not counting states already mentioned here:
*Michigan: I-96/M-37
Michigan also has I-75/M-55 west of West Branch, but I can't think of any other current ones at the moment.
I-194/M-66 in Battle Creek
Add another for North Carolina:
I-40/NC-24: NC-24 jumps on I-40 from Exit 364 to Exit 373 to bypass Warsaw and Kenansville in Duplin County.
Quote from: Zeffy on February 11, 2015, 04:40:00 PM
Quote from: Kacie Jane on February 11, 2015, 11:44:42 AM
But you're forgetting the northernmost mile of I-287, concurrent with NJ 17.
Eventually, the more I forget about this the more I'll actually start to remember it, considering it's one of maybe less than 5 occurrences in New Jersey...Quote from: roadman65 on February 11, 2015, 12:09:56 PM
NJ 173 does near Clinton for a short stretch with I-78
It does? I could've sworn that 173 rode parallel to 78 most of the time, never with it.
Google maps says no, but Wikipedia (which is probably ripped from the SLDs, though I haven't checked) says yes between Exits 13 and 15. I'm inclined to believe Wikipedia here; the road Google has 173 on there looks nothing like a state highway in street view, and doesn't show any signage.
173 officially uses I-78 per the SLD, but it doesn't appear to be signed. Thanks, I-287/NJ 17!
Virgnia has some, all signed:
I-64/VA 33
I-64/VA 134 (signed on BGSs only as the distance is very short)
I-64/VA 168
I-66/VA 55
I-66/VA 234
I-81/VA 100
Oddly, even though VA 42's gaps are "filled" in the Traffic Logs (i.e. shown as concurrent with VA 100, SR 730, US 460, SR 615, US 220), the Traffic Log does NOT show it concurrent with I-64 (or with the old US 60 routing, SR 632) between US 60 Bus and VA 42-269.
Mapmikey
Quote from: TheHighwayMan394 on February 12, 2015, 12:29:57 AM
Other Wisconsin:
I-94/WIS 164
I-39/90+WIS 11
add:
I-39/WI 23
I-43/WI 32, 42, 57 in different spots
future I-41/WI 100, 167, (32 debatable since it is on all CD road)
Quote from: The Nature Boy on February 11, 2015, 07:45:56 AM
How long (legally) is that I-95/Rt. 128 concurrency in the Boston area? That might be a contender.
According to MassDOT's Road Inventory file, the I-95/MA 128 concurrency between Canton and Peabody is just about 37 miles. This is verified by the fact that the first milepost on 128 north of the I-95 split reads 37.4.
CA-22 and I-405 is partially Cosigned between OC and Los Angeles County
I-80 and CA-12 is Cosigned in Fairfield, CA
CA-113 and I-80 is cosigned between Dixon and Davis, CA
I-280 and CA-35 is Co-signed near CA-92 in San Mateo County
Business 80 and CA-51 concurrent in Sacramento CA
CA-99 and I-5 concurrent between Natomas and Downtown Sacramento.
Quote from: bing101 on February 12, 2015, 03:00:40 PM
I-110 and CA-110 Between the US-101 interchange and I-10 in Downtown Los Angeles has been a contentious one.
what
QuoteMississippi: I-59/MS 42
Also I-59/MS 43 in Picayune and I-20/I-59/US 11/US 80/MS 19 in Meridian.
Quote*Vermont: none? (I-91/VT 9 doesn't exist)
There is technically an I-91/TRUCK VT 9, but it's not signed as such.
Quote from: roadman on February 12, 2015, 02:55:07 PM
Quote from: The Nature Boy on February 11, 2015, 07:45:56 AM
How long (legally) is that I-95/Rt. 128 concurrency in the Boston area? That might be a contender.
According to MassDOT's Road Inventory file, the I-95/MA 128 concurrency between Canton and Peabody is just about 37 miles. This is verified by the fact that the first milepost on 128 north of the I-95 split reads 37.4.
You're a tad late to the party: :)
Quote from: PHLBOS on February 11, 2015, 11:45:58 AM
Quote from: The Nature Boy on February 11, 2015, 07:45:56 AMHow long (legally) is that I-95/Rt. 128 concurrency in the Boston area? That might be a contender.
Just over 37 miles from Canton (Exit 12) to Peabody (Exit 45).
The first actual 128 Mile marker beyond the I-95 split reads
37.2 (http://goo.gl/maps/zn6DF).
Quote from: froggie on February 12, 2015, 03:43:52 PM
QuoteMississippi: I-59/MS 42
Also I-59/MS 43 in Picayune and I-20/I-59/US 11/US 80/MS 19 in Meridian.
Quote*Vermont: none? (I-91/VT 9 doesn't exist)
There is technically an I-91/TRUCK VT 9, but it's not signed as such.
Signed as "To Vt. 9" or at least it was six years ago.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.millenniumhwy.net%2F2009_Northeast_Day_3%2FImages%2F36.jpg&hash=ca10be1c00febd4d3bfbbde14f3117728af1c4e1)
But then you get beyond those overheads and there's VT 9 east reassurance.
Quote from: hbelkins on February 12, 2015, 08:46:53 PM
Signed as "To Vt. 9" or at least it was six years ago.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.millenniumhwy.net%2F2009_Northeast_Day_3%2FImages%2F36.jpg&hash=ca10be1c00febd4d3bfbbde14f3117728af1c4e1)
I hope that sign is rare in that you are in Vermont, and they direct you to one of their own towns along with adding Vermont to it. Been thru those signs before and never caught it until now.
Quote from: hbelkins on February 12, 2015, 08:46:53 PM(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.millenniumhwy.net%2F2009_Northeast_Day_3%2FImages%2F36.jpg&hash=ca10be1c00febd4d3bfbbde14f3117728af1c4e1)
Note the old-style (even for when that BGS was new) font in the I-91 shields. I'm sure such is getting more rare as time rolls on.
I wouldn't be surprised if those haven't been replaced. On this trip, I just used I-91 between this exit and the next one to avoid downtown Brattleboro. The signs that were on that short portion of I-91 then had been replaced when I was on it two years ago.
I'm actually surprised that I can't find any State/Interstate Concurrencies in Washington, several US routes, but no State Routes.
Oregon however it lousy with them, mainly OR 99, 99W, and 99E, largely because 99 joins and leaves I-5 all through the state.
Quote from: TEG24601 on February 13, 2015, 05:58:18 PM
I'm actually surprised that I can't find any State/Interstate Concurrencies in Washington, several US routes, but no State Routes.
As I listed above, I-405/SR 900.
Quote from: TEG24601 on February 13, 2015, 05:58:18 PM
I'm actually surprised that I can't find any State/Interstate Concurrencies in Washington, several US routes, but no State Routes.
Oregon however it lousy with them, mainly OR 99, 99W, and 99E, largely because 99 joins and leaves I-5 all through the state.
99W never overlaps with I-5. Its only overlap is with with US 20 and OR 34 in Corvallis.
99E has only one overlap with I-5. Bus 99E doesn't -- it straddles I-5 at the north end of the Salem Pkwy to connect to mainline 99E (and I don't think it officially connects to 99E at all).
And as often as 99 duplexes with I-5, US 30 still has it beat on I-84, especially with the Hist US 30 routing taking US 30 off I-84 in the Gorge.
It was mentioned above that SR-37 in Indiana duplexes with I-69, which is certainly correct. It also duplexes with I-465 around Indianapolis, as does SR-67. These duplexes are kind of in a gray area as far as being "signed." There are no reassurance signs for the state routes along 465, but signs direct motorists onto the interstate to continue driving on the state route in each case.
While we are on Indiana, using the Great Indianapolis Highway Multiplex that is I-465, I-74 is also concurrent with SRs 37 and 67. Back to I-69, I don't think it's been mentioned yet of the concurrencies with SR 57 from MMs 18 to 22, SR 38 from MMs 219 to 222, SR 9 from MMs 222 to 226 and SR 67 from MMs 222 to 234.
The only other concurrency I can think of at this moment would be SR 62 with both I-64 and I-265 around New Albany.
Quote from: sbeaver44 on February 11, 2015, 02:54:08 PM
Quote from: akotchi on February 11, 2015, 12:28:37 PM
I-81/PA 309 in the Wilkes Barre area, I-78/PA 309 in the Allentown area, and I-99/PA 26 in the Bellefonte area are a few that come to mind.
The I-99/US 220/PA 26 one is interesting...an Interstate/US Route/State Route concurrency. I-90/US 14/SD 79 listed below also meets that test, as does I-86/US 219/NY 17 (with the 86/17 mentioned previously)
Adding more PA to this:
-I-80/PA 66 near Clarion
More New York:
-I-81/NY 17 in Binghamton
-I-84/NY 52 near Newburgh
-I-88/NY 7 near Binghamton
-I-87/NY 7 near Albany (North 87 only)
-I-790/NY 5-8-12 in Utica
-I-88/NY 28 in Oneonta
-I-190/NY 324 over the South Grand Island Bridge
-I-278/NY 440 in Staten Island
-NOT NY 15 - Officially begins in Wayland despite signage that NY seems to keep putting up (Why doesn't NY just make NY 415 into NY 15?)
-Does NY 878/I-878 count? :D
Also I-890 and NY 7. And a wrong-way concurrency to boot!
NE2 pointed out Nevada doesn't have any. For a few years, one was signed, but I don't know how "official" it was.
When first constructed, I-215 in Las Vegas/Henderson was co-signed with SR 146, from Exit 6 (St. Rose Pkwy/SR 146) and its terminus at I-515/US 93/US 95. This is because I-215 was built directly on the SR 146 alignment, and SR 146 continued east beyond the interstate. The county built and signed the freeway overlap, but NDOT logs did not recognize the overlap at that point. NDOT eventually renumbered the eastern leg of 146 as SR 564, and the overlapping signs were eventually removed.
I found another one for Missouri. MO Hwy 7 is concurrent with I-49 in the Harrisonville area for a short distance.
In Nebraska, when they built the Nebraska Highway 71 bypass of Kimball, it overlapped I-80 to connect to the part of NE 71 south of Kimball.
Some people have the false belief that Nebraska Highway 2 overlaps I-80 from the easternmost Grand Island exit to US 77 in Lincoln, but the highway log and signage on I-80 say otherwise.
Quote from: corco on February 12, 2015, 12:33:25 AM
Quote from: NE2 on February 11, 2015, 10:44:11 PM
Which states don't have any? Not counting states already mentioned here:
*Alabama: I-359/SR 69
*Alaska: fuck you
*Arizona: I-17/SR 89A
*Arkansas: I-49/AR 12, I-49/AR 16
*Colorado: I-70/SH 9
*Delaware: none
*District of Columbia: fuck you
*Georgia: I-75/SR 7 from Valdosta to Hahira
*Hawaii: none
*Idaho: I-84/SH 55
*Illinois: I-55/I-64/IL 3
*Indiana: I-69/SR 37
*Kentucky: I-265/KY 841
*Louisiana: I-49/LA 8
*Maine: I-95/SR 15
*Maryland: nothing signed, but I-595/MD 2
*Massachusetts: I-91/Route 2
*Michigan: I-96/M-37
*Mississippi: I-59/MS 42
*Nebraska: none?
*Nevada: none
*New Hampshire: I-89/NH 10
*New Mexico: none
*North Carolina: I-277/NC 16
*North Dakota: I-94/ND 3
*Oklahoma: I-44/SH 66
*Oregon: I-5/OR 138
*Rhode Island: none
*South Carolina: I-385/SC 14 (well-signed, at least on SC 14 west) and I-585/SC 9 (though signage for I-585 is somewhat lacking)
*Tennessee: I-40/SR 56
*Texas: I-10/SH 17
*Utah: none, unless there's a sign somewhere for SR 30 on I-15 or I-84
*Vermont: none? (I-91/VT 9 doesn't exist)
*Washington: I-405/SR 900
*Wisconsin: I-94/WIS 35
*Wyoming: I-80/WYO 789
That's 40/50 states with something signed.
Montana has I-90/MT 200 as well as I-15/MT 200
South Dakota has I-90/SD 34/SD 79, among others.
Kansas has I-70/K-4, among others.
Cali has I-5/SR-113 among others.
Iowa has I-35/IA 27, among others?
Does Missouri have any? I can't think of any.
Arizona I-40/AZ 99
Arizona/California I-40/AZ 95 (Unsigned)
Quote from: sandwalk on February 11, 2015, 10:58:24 AM
Twice:
Ohio State Route 2 is concurrent with I-90 for about 17 miles in the western suburbs of Cleveland. Then just east of downtown, Route 2 connects back up with I-90 for another 10 miles through the east side.
OH 21 runs with I-77 for about 10 miles from Montrose to Richfield, and OH 14 runs with I-480 for over 20 miles at its eastern end. There are other ones also like the short duplex of OH 4 with I-70 and OH 49 with I-70.
Indiana for a while had the signed duplex of SR 25 and I-65 around Lafayette, which was unusual for Indiana. That party ended when INDOT went on a kick of discontinuous segments.
How about Florida about I-4 and FL 400
http://en.m.wikipedia.org/wiki/Florida_State_Road_400#State_Road_400
This is an interesting one where a state route and an interstate share the Same route the entire way.
Quote from: bing101 on February 18, 2015, 11:36:35 AM
How about Florida about I-4 and FL 400
http://en.m.wikipedia.org/wiki/Florida_State_Road_400#State_Road_400
This is an interesting one where a state route and an interstate share the Same route the entire way.
Am I interpreting the article correctly that FL 400 is concurrent with the length of I-4 in addition to the signed portion on the east side of I-95 beyond I-4?
Yes. Florida is one of four states to give state numbers to federal routes (though only Florida and Georgia do it on Interstates). Insert disparaging remark about bling101.
Georgia I was aware of; I'd say Oregon and...?
http://en.wikipedia.org/wiki/Interstate_175 (http://en.wikipedia.org/wiki/Interstate_175)
I-175 Florida is Hidden route FL-594
http://en.wikipedia.org/wiki/Interstate_195_%28Florida%29 (http://en.wikipedia.org/wiki/Interstate_195_%28Florida%29)
Also I-195 Florida is Hidden FL-112
Quote from: bing101 on February 18, 2015, 03:26:10 PM
http://en.wikipedia.org/wiki/Interstate_175
I-175 Florida is Hidden route FL-594
http://en.wikipedia.org/wiki/Interstate_195_%28Florida%29
Also I-195 Florida is Hidden FL-594
Coincidentally, I-5 Oregon has hidden ORE 1*, I-84 -> ORE 2...
Unless the internal number is posted in the wild, they're not really part of this thread's scope (where FL 400 barely makes the cut).
*Internal Highway as opposed to signed Route, like OR 569 (which is ORE 69).
I-195 in Miami/ Miami Beach is hidden route FL 112, that exists on both ends of it signed, but not signed on the interstate.
That is like I-95 being FL 9 north of Golden Glades and FL 9A south of it. Also I-4 being FL 400, and I-10 being FL 8. All FL interstates are unsigned with State Routes even though all have them.
Quote from: NE2Yes. Florida is one of four states to give state numbers to federal routes (though only Florida and Georgia do it on Interstates). Insert disparaging remark about bling101.
Quote from: BickendanGeorgia I was aware of; I'd say Oregon and...?
Hint: they're all east of the Mississippi and south of the Ohio...
Alabama and Tennessee?
iPhone
Quote from: Bickendan on February 18, 2015, 02:12:23 PM
Georgia I was aware of; I'd say Oregon and...?
Alabama, Florida, Georgia, Tennessee. Oregon is a bit different in that every state-maintained signed route has a separate highway number (not counting recent efforts to coordinate the two systems). In the four southeastern states, the unsigned numbers for federal routes are in the same system as the signed state route numbers.
Apropos to the topic, only Florida and Georgia do it for Interstates. Georgia does a one-to-one mapping (e.g. I-75 is SR 401), while Florida tried to use the existing grid, leading to a few state roads that leave the Interstate and become signed (SR 9, SR 400, SR 594, formerly SR 9A around Jax).
Confirmed that I-65 and KY 61 do indeed have a concurrency in Louisville. It's basically a bridge over a railroad track.
Page 3 of http://transportation.ky.gov/Planning/SPRS%20Maps/Louisville_city.pdf shows the configuration pretty well.