Looking at the maps of various states, I know that in many instances, neighboring states will coordinate their highway numbering so that a given state highway will retain the same number across the state line - however, on other occasions, the number of the road will change, or sometimes, the road on one side of the line won't even be a numbered road at all.
As far as Missouri (the state where I live) goes, here is a list of state routes that cross into neighboring states, as well as their respective designations across the state line. (Examples of roads that keep the same number across the border are listed in boldface; the ones that used to do so, but no longer do, will appear in italics.)
MO 2 continues into Kansas as K-68.
MO 5 continues into Iowa as IA 5, and into Arkansas as AR 5.
MO 13 continues into Arkansas as AR 21.
MO 15 continues into Iowa as County Road V56 (formerly IA 15).
MO 18 continues into Kansas as a local road (359th Street).
MO 21 continues into Arkansas as AR 115.
MO 27 continues into Iowa as IA 27.
MO 37 continues into Arkansas as AR 37.
MO 39 continues into Arkansas as AR 221.
MO 43 continues into Arkansas as AR 43.
MO 51 continues into Illinois as a local road, connecting to IL 3, and into Arkansas as AR 139.
MO 52 continues into Kansas as K-52.
MO 59 continues into Arkansas as AR 59.
MO 66 continues into Kansas as K-66.
MO 74 continues into Illinois as IL 146.
MO 77 continues into Kentucky (via the ferry) as a local road, connecting to KY 94.
MO 81 continues into Iowa as IA 81.
MO 84 continues into Arkansas as AR 90.
MO 92 continues into Kansas as K-92.
MO 108 continues into Arkansas as AR 77.
MO 126 continues into Kansas as K-126.
MO 148 continues into Iowa as IA 148.
MO 149 continues into Iowa as County Road T30.
MO 150 continues into Kansas as a local road (135th Street, formerly K-150).
MO 171 continues into Kansas as K-171.
MO 202 continues into Iowa as IA 202.
As you can see here, Missouri has 26 state highways that cross the state's borders, and among those, 13 of them retain the same number across the state line - a proportion of exactly 50%. How does your state measure up in that regard? Also, are there some regions of the country where state roads are more likely to keep the same number across state lines? I know that it's very common in New England because a lot of the state road numbers there are holdovers from the erstwhile "New England Interstate Route" system. Anyway, whatever you find regarding your state's highways and how many retain the same number across their borders - I'm interested to hear more!
CT-MA
Roads that do: 41, US 7, 183, 8, 189, 10/(US) 202, 168, 187, 75, 159, I-91, US 5, 192, 220, 186, 83, 19, 32, I-84, 198, 169, 131, 197, 12, I-395, 193
Historically, but Sturbridge still thinks it does: 15
CT routes that end at border (SR's not included): 272, (historically: 179)
MA Routes that end (or become SR's) at CT border: 7A, 31
CT-RI
Roads that do: US 1, 78 :), 216, I-95, 138, 165, 14, US 6, 101, US 44
There are no roads that end at the border. CT 14A rejoins its parent a few feet before the border. CT 2 ends at US 1 and RI 117 ends at RI 14 near the border. Historically, CT 184 did cross the border, but now ends at CT 216 near it.
CT-NY
Roads that do: US 1, NY 120A* (CT portion remains a NY Route), I-684 (twice), 123, 137, 116, 35, I-84, US 6/202, 55, 343, US 44
CT Roads that used to but no longer do: 124, 361
CT Roads that do not and never did: 15, 104, 341, 41
NY Roads that do not: 433, numerous county routes
Québec is a little bit different with their unique system, but I'll play this game anyways.
QC-ON
Routes that keep their number: 148
Routes that don't: 5, 20, 40, 101, 117, 301, 338, 388
QC-NY
Routes that keep their number: none
Routes that don't: 15, 132, 138, 203, 209, 219, 221, 223
QC-VT
Routes that keep their number: 139, 141, 147, 225, 235, 243, 253
Routes that don't: 55, 133, 143, 237
QC-NH
Routes that keep their number: none
Routes that don't: 257
QC-ME
Routes that keep their number: none
Routes that don't: 161, 173
QC-NB
Routes that keep their number: none
Routes that don't: 85, 289
QC-NL
Routes that keep their number: none
Routes that don't: 138, 389
CA-OR
CA 161 straddles the state border according to GMaps
CA-NV
CA 28
CA 88
CA 266
CA-AZ
None!
CA-Mexico
None!
Indiana fails in this department lmao
IN-IL
IN 2- IL 17
IN 10- IL 114
IN 18- County Road 880 N
IN 26- IL 9
IN 28- IL 119
IN 32- County Road 1360 N
IN 234- Mill Road
IN 163- Clinton Road
IN 154- W Clover Street
IN 441- ?
IN 64- IL 15
IN 62- IL 141
None continues across the IL-IN state line
IN-KY
IN 161- KY 2262
IN 237- KY 69
IN 135- KY 79
IN 101- KY 1039
None continues across the KY-IN state line
IN-OH
IN 252- OH 126/129
IN 44- OH 725
IN 227- OH 177
"Old" IN 122- OH 122
IN/OH 121
IN 28- OH 571
IN 32- OH 47
IN 26- OH 119
IN 67- OH 29
IN 218- OH 707
IN 124- OH 81
Paulding Road- OH 500
Dawkins Road- OH 613
Woodburn Road- OH 111
IN 37- OH 2
IN 8- OH 18
CR 40- OH 249
IN 427- OH 34
1 continues across the IN-OH state line (IN/OH 121)
IN-MI
IN 120- W Territorial Road
IN 327- Rierson Road
IN 9- M-66
IN 15- M-103
CR 17- M-217
IN 19- "Old" M-205 (Cassopolis Street)
IN 23- M-62
IN 933- M-51
IN 39- M-239
None continues across the MI-IN state line
The FL-GA line has only two that keep. FL 15 and FL 121 that both become GA 15 and GA 121 respectively. The rest end at the border.
Don't think AL-FL have any MSR.
In MA-RI, it appears that all routes keep their numbers across state lines with the sole exception of RI-100 in Burrillville that ends at the state line with Douglas, MA.
WI-83, WI-78, and WI-35 at the IL border. WI-16, WI-243, and WI-70 at the MN border.
MA 1A, 286, 150, 108, 125, 97, 28, 38, 3A, 111, 13, 31, 119, 12, 32, 78, 10, and 63 all keep their numbers into New Hampshire.
Various secondary routes that keep their numbers omitted.
VA-/NC-8
WV-/VA-/NC-16
VA-/NC-32
VA-/NC-35
VA-/NC-46
VA-/NC-49
VA-/NC-62
VA-/NC-86
VA-/NC-87
VA-/NC-89
VA-/NC-93
VA-/NC-96
VA-/NC-103
VA-/NC-119
VA-/NC-168
VA-/NC-186
VA-/KY-80
VA-/WV-9
VA-/WV-39
VA-/WV-55
VA-/WV-83
VA-/WV-84
VA-/WV-102
VA-/WV-127 (straddles state line for a short distance)
VA-/WV-259
VA-/WV-311
VA-/WV-598
Michigan - none
CO/WY
CO13 continues into WY as WYO789
CO125 continues into WY as WYO230
CO127 continues into WY as WYO230
**Bonus** WYO70 continues into WY as WYO70 (Not counting in totals)
0/3
CO/NE
CO71 continues into NE as NE71
CO113 continues into NE as NE19
CO11 continues into NE as NE27
CO23 continues into NE as NE23
2/4
CO/KS
CO96 continues into KS as K-96
CO116 continues into KS as County Road 12
1/2
CO/OK
None
CO/NM
CO389 continues into NM as NM551
CO159 continues into NM as NM522
CO17 continues into NM as NM17
CO172 continues into NM as NE511
CO140 continues into NM as NM170
1/5
CO/AZ (for the Four Corners haters)
None
CO/UT
CO41 continues into UT as UT162
CO90 continues into UT as UT46
CO318 continues into UT as Browns Park Road
0/3
Total: 4/17 for 23.5%
I think nearly all state routes leaving SC going into NC keep their number, and maybe half going into GA keep their number.
I think nearly all state routes leaving NC going into VA keep their number, and a couple of them going into GA keep their number. None of them going into TN keeps its number.
And I'm pretty sure nothing leaving TN going into any bordering state keeps its number. And the only places I see a number being kept in KY is 80 going into both VA and across the Mississippi River ferry into MO.
Quote from: Great Lakes Roads on June 20, 2022, 04:36:35 AM
Indiana fails in this department lmao
IN-OH
"Old" IN 122- OH 122
IN/OH 121
IN-MI
IN 120- W Territorial Road
So in addition to the one that currently exists, there are two that previously existed. You noted that there used to be an IN 122 that connected to OH 122 near Boston. Also, Territorial Rd/Morenci Rd used to be M-120, which connected to IN 120 near Fremont and OH 120 near Morenci to make a three-state route.
Quote from: wriddle082 on June 20, 2022, 09:14:04 AM
I think nearly all state routes leaving SC going into NC keep their number, and maybe half going into GA keep their number.
I think nearly all state routes leaving NC going into VA keep their number, and a couple of them going into GA keep their number. None of them going into TN keeps its number.
And I'm pretty sure nothing leaving TN going into any bordering state keeps its number. And the only places I see a number being kept in KY is 80 going into both VA and across the Mississippi River ferry into MO.
You and 1995hoo both missed KY 160, which runs between Cumberland/Benham/Lynch and Appalachia and crosses Black Mountain, Kentucky's highest point.
I suspect it (and KY/VA 80) are Virginia's doing, as Kentucky generally doesn't continue route numbers from other states. Granted, the river borders limit the number of crossings of state routes, but there are ample opportunities for continuation with Tennessee. There are a few state-numbered Kentucky routes that become county routes once they cross into the Volunteer state.
Virginia is pretty good about the continuation, but doesn't play well with Tennessee. The only continued route number I can think of between the two states is 70. TN 93 becomes VA 224 (and is a great route from the east side of Kingsport to join US 23) and TN 44 becomes VA 75 southeast of Abingdon.
Quote from: hbelkins on June 20, 2022, 09:28:17 AM
I suspect it (and KY/VA 80) are Virginia's doing, as Kentucky generally doesn't continue route numbers from other states. Granted, the river borders limit the number of crossings of state routes, but there are ample opportunities for continuation with Tennessee. There are a few state-numbered Kentucky routes that become county routes once they cross into the Volunteer state.
Virginia is pretty good about the continuation, but doesn't play well with Tennessee. The only continued route number I can think of between the two states is 70. TN 93 becomes VA 224 (and is a great route from the east side of Kingsport to join US 23) and TN 44 becomes VA 75 southeast of Abingdon.
VA/TN 91 also keeps its number.
Virginia made a concerted effort about 1940 to renumber routes to sync up route numbers with those in adjacent states. In some cases, this involved both states renumbering their routes, like with WV 16 and WV 39.
Quote from: 1995hoo on June 20, 2022, 08:40:45 AM
WV-/VA-/NC-16
VA-/WV-9
VA-/WV-39
VA-/WV-55
VA-/WV-83
VA-/WV-84
VA-/WV-102
VA-/WV-127 (straddles state line for a short distance)
VA-/WV-259
VA-/WV-311
VA-/WV-598
For the rest of West Virginia, simply add:
WV/OH-527
WV/PA-43
Also, there are a few secondaries to add:
WV-635/SR-635 (Buchanan County, Virginia)
(West Virginia) LSR-857*/PA-857
Plus a few oddities:
WV-618 almost connects with OH-618.
WV-7 almost intersects with OH-7, but that route runs perpendicular.
*LSR-857 in Monongalia County is the only LSR route that is only in one county. If I my suspicions are correct, the designation LSR is supposed to mean "long secondary route" where the number stays the same between counties. The other two that I know of are LSR-21 (former US-21) in Kanawha, Jackson and Wood counties; and LSR-73 (former WV-73) in Marion and Monongalia counties.
I didn't list VA-/TN-70 and -91 because I understood Tennessee's routes of those numbers to be secondary routes and I wasn't listing secondary routes.
For Virginia there is also:
SR 903/NC 903
Former SR 615/NC 615
Virginia thought Tennessee was renumbering TN 44 to TN 75 which is why they renumbered VA 77 to VA 75.
Virginia also used to have VA 17/MD 17 but they rerouted VA 17 to Winchester not all that long after.
There also was VA 59/WV 59 in the post-1940 era.
VA 80 did not reach Kentucky until 1950 and was extended there at Kentucky's request to meet their new highway.
Quote from: 1995hoo on June 20, 2022, 09:58:20 AM
I didn't list VA-/TN-70 and -91 because I understood Tennessee's routes of those numbers to be secondary routes and I wasn't listing secondary routes.
TN "secondary" routes are more formalities than anything else. Primary routes in TN "primarily connect cities" , whereas secondary routes may not be the highest quality route between two given points. Otherwise, they are the same, despite the different shields, and many routes switch between primary and secondary multiple times.
And yeah I did forget that VA tries to play nice with other states, but TN definitely doesn't play nice with NC, GA, AL, MS, or KY.
Utah is 1 for 15, but historically had another. Starting at the northwest corner and going clockwise:
Idaho:
- SR 42 becomes old SH 81/CR 30S
- SR 23 becomes old SH 35/CR D1
- SR 200 becomes old SH 34/State St
Wyoming:
- SR 30 becomes WYO 89
- SR 16 becomes WYO 89 (same route, because 16 and 30 are supposed to be an implied connection)
- SR 150 becomes WYO 150
- SR 43 becomes WYO 414
- SR 43 becomes WYO 530
Colorado:
- Browns Park Rd/FA 1364 becomes SH 318
- SR 46 becomes SH 90
- SR 162 becomes SH 41
Arizona:
- SR 59 becomes SR 389
Nevada:
- SR 56 becomes SR 319
- SR 21 becomes SR 487
- SR 58/BL-80 becomes old SR 224/BL-80
- SR 30 becomes SR 233, which was numbered 30 before Nevada renumbered basically everything in 1978
Quote from: GaryV on June 20, 2022, 08:41:24 AM
Michigan - none
M-49 and OH-49
Potential could-have-beens had the number not already been used in Michigan:
* IN Elkhart County 17 and M-217
* IN-39 and M-239
For Vermont, most do. It's shorter to list the exceptions:
- The aforementioned Quebec routes.
- VT 105A/Unnumbered Quebec road
- VT 17/NY 185
- VT 31/Washington CR 25)
- VT 279/Unsigned NY 915G
- VT 113/Unnumbered New Hampshire road
- VT 105/Unnumbered New Hampshire road (but was technically signed as "VT 105" at one point)
- VT 114/Unnumbered New Hampshire road
I'm not counting the Lake Champlain ferries, since the ferry landings are not part of either state's system.
Worth noting that when Quebec did their great renumbering, Vermont renumbered most of the state routes in its side of the border to match. The only exception was VT 108.
Not counting VT 100 or NH 103 since, in both cases, they are concurrent with other routes that do keep their number crossing the state line (8 and 12 respectively).
Quote from: LilianaUwU on June 20, 2022, 02:56:29 AM
Québec is a little bit different with their unique system, but I'll play this game anyways.
QC-ON
Routes that keep their number: 148
Routes that don't: 5, 20, 40, 101, 117, 301, 338, 388
QC-NY
Routes that keep their number: none
Routes that don't: 15, 132, 138, 203, 209, 219, 221, 223
QC-VT
Routes that keep their number: 139, 141, 147, 225, 235, 243, 253
Routes that don't: 55, 133, 143, 237
QC-NH
Routes that keep their number: none
Routes that don't: 257
QC-ME
Routes that keep their number: none
Routes that don't: 161, 173
QC-NB
Routes that keep their number: none
Routes that don't: 85, 289
QC-NL
Routes that keep their number: none
Routes that don't: 138, 389
I'm not sure when or why Quebec renumbered all of its routes, but it used to have several route numbers continue from its neighbors (1955 Shell Map referenced (https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~212331~5500358?qvq=q%3Aquebec%201956%3Bsort%3APub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No%3Blc%3ARUMSEY~8~1&mi=4&trs=6)).
ON-QC: ON 17-QC 17, ON 2-QC 2
NY-QC: US 9-QC 9
VT-QC: US 7-QC 7, US 5-QC 5
NB-QC: QC 2 - NB 2
Notice that Highway 2 was once continuous through 4 provinces from Windsor, Ontario to Halifax, Nova Scotia.
Several numbered highways in Arkansas continue as lettered routes in Missouri as well.
Quote from: Road Hog on June 20, 2022, 12:13:21 PM
Several numbered highways in Arkansas continue as lettered routes in Missouri as well.
This of routes that
don't keep the same number would be rather long...
Quote from: wanderer2575 on June 20, 2022, 10:40:13 AM
Quote from: GaryV on June 20, 2022, 08:41:24 AM
Michigan - none
M-49 and OH-49
Dang it. I was looking at the official MI map and the road in OH isn't numbered.
Historically, I believe what is now US 41 used to be both Michigan and Wisconsin 15.
Iowa and Minnesota sync up on most state routes crossing the line (4, 15, 26, 60, 76, 86, 91, 139)
MN/WI: listed above (the rest: MN 39/WIS 105, MN 48/WIS 77, MN 36/WIS 64, MN 60/WIS 25, MN 43/WIS 54)
MN/ND: 200, 210 (the rest: MN 175/ND 5, MN 11/ND 66, MN 317/ND 17, MN 1/ND 54, MN 55/ND 11)
MN/SD: none (MN 28/SD 10, MN 40/SD 20, MN 68/SD 22, MN 271/SD 28, MN 19/SD 30, MN 30/SD 34, MN 269/SD 11)
Guess I might as well do Kansas. Let me know if I made any errors.
Colorado border
51 – no (becomes a gravel county road)
96 - yes
Nebraska border
27 - yes
161 - close but no cigar (becomes 61)
25 - yes
117 - close but no cigar (becomes 17)
8 - no
128 - no
14 - yes
15 - yes
148 - no
99 - yes
63 - no
7 - no (becomes a county road)
Missouri border
92 - yes
68 - no
52 - yes
239 - no (secondary SRs in Missouri are lettered, not numbered)
126 - yes
171 - yes
66 - yes
Oklahoma border
99 - yes
15 - no
179 - no
8 - yes
1 - no
23 - yes
25 - no
Quote from: froggie on June 20, 2022, 10:45:28 AM
For Vermont, most do. It's shorter to list the exceptions:
- The aforementioned Quebec routes.
- VT 105A/Unnumbered Quebec road
- VT 17/NY 185
- VT 31/Washington CR 25)
- VT 279/Unsigned NY 915G
- VT 113/Unnumbered New Hampshire road
- VT 105/Unnumbered New Hampshire road (but was technically signed as "VT 105" at one point)
- VT 114/Unnumbered New Hampshire road
I'm not counting the Lake Champlain ferries, since the ferry landings are not part of either state's system.
Worth noting that when Quebec did their great renumbering, Vermont renumbered most of the state routes in its side of the border to match. The only exception was VT 108.
Not counting VT 100 or NH 103 since, in both cases, they are concurrent with other routes that do keep their number crossing the state line (8 and 12 respectively).
Don't forget VT 9/NY 7
Quote from: froggie on June 20, 2022, 10:45:28 AM
For Vermont, most do. It's shorter to list the exceptions:
- VT 105A/Unnumbered Quebec road
Of note is that it
did continue as QC 105A before the mid-70s renumbering, one of the only 3-digit numbers back then.
54 bounces back and forth between MD and DE.
404, 16 and 300 cross the state line.
DE-896 turns into MD-896, which then becomes PA-896.
707, 780, 711 and 713 (multiple times) cross the MD/VA border. VA 679 appears to partially (westbound lane) cross into MD.
WV 24/3, 12/2 and 12/1 keep the dual numbers into MD, as does single-numbered 12. 12/7 seems to be multiple roads which bounce back and forth.
Quote from: GaryV on June 20, 2022, 01:44:13 PM
Quote from: wanderer2575 on June 20, 2022, 10:40:13 AM
Quote from: GaryV on June 20, 2022, 08:41:24 AM
Michigan - none
M-49 and OH-49
Dang it. I was looking at the official MI map and the road in OH isn't numbered.
Historically, I believe what is now US 41 used to be both Michigan and Wisconsin 15.
And US-45 used to be WI-26 and M-26.
Quote from: Ted$8roadFan on June 20, 2022, 06:59:45 AM
In MA-RI, it appears that all routes keep their numbers across state lines with the sole exception of RI-100 in Burrillville that ends at the state line with Douglas, MA.
Also RI 5. Becomes a local road in Millville, MA.
Here are the results for Iowa:
IA-MN:
Formerly, IA 91 & MN 91
IA 60 & MN 60
IA 86 & MN 86
IA 4 & MN 4
IA 15 & MN 15
IA 27
IA 139 & MN 139
IA 76 & MN 76
IA 26 & MN 26
IA-WI:
IA 9 & WI 82
IA-IL:
IA 64 & IL 64
IA 136 & IL 136
IA 92 & IL 92
IA 163
Formerly, IA 2 & IL 9
IA-MO:
IA 27 & MO 27
IA 81 & MO 81
IA 202 & MO 202
IA 5 & MO 5
IA 148 & MO 148
IA-NE:
IA 2 & NE 2
IA 92 & NE 92
IA 165 & Abbott Drive
IA 175 & NE 51
IA-SD:
IA 3 & SD 50
Formerly, IA 403 & SD 48
IA 10 & SD 46
IA 9 & SD 42
Out of the 25 current state highways in Iowa that cross a border, 17 of them keep their number in the neighboring state (So, over 2/3 of them). It makes sense for it to be a fairly high portion of highways, since Iowa has historically put a heavy emphasis on route continuity with neighboring states (To the point where the original establishment of Iowa's highway system in 1920 prioritized route continuity over creating a numbering system).
EDIT: Added IA 92 - NE 92 border crossing and adjusted summary accordingly.
I'll give Illinois a whirl, while leaning on previous posts to help
IL-IA was listed right above by IowaTraveler
IL-IN was covered by Great Lakes Roads, with a "none"
IL-KY is a "none" :
IL 13/KY 56
IL 1/KY 91
IL-MO has at least one:
IL 110/MO 110 (The CKC is good for something)
IL 146/MO 74
IL 150/MO 51 (this one is kinda an anagram)
IL 3/MO 115 (kinda but not really)
IL-WI I count 3 (and a half, for 131/31)
IL 35/WI 35
IL 84/WI 80
IL 78/WI 78
IL 26/WI 69
IL 2/WI 213
IL 75/WI 67
IL 76/WI 140
IL 47/WI 120
IL 83/WI 83
IL 131/WI 31 (at least related)
IL 137/WI 32
IL and MI don't share a ground border nor a bridge/tunnel/ferry crossing for Lake Michigan, so that is a "none"
Illinois doesn't have a lot, but a bit more with land bordering Wisconsin than water bordering Missouri and Kentucky. None with partially land partially water bordering Indiana
Washington
WA/BC:
WA 543/BC 15
WA 539/BC 13 - WA 539 was formerly SSH 1B, which almost counts
WA 9/BC 11
WA 21/BC 41 - WA 21 was formerly SSH 4A
WA 25/BC 22 - WA 25 was formerly PSH 22
Old WA 251/BC 22A - WA 251 was formerly SSH 22A
WA 31/BC 6 - WA 31 was formerly PSH 6
Prior to the 1964 renumbering, Washington/BC would have had 3 actual and 2 borderline crossings with continuous numbers. At least the US routes carry over.
WA/ID:
WA 41/ID 41 - Numbered for ID 41, but also fits the grid
WA 290/ID 53
WA 278/ID 58
WA 274/ID 60
WA 272/ID 6
WA 128/ID 128 - Numbered for WA 128
WA/OR:
WA 129/OR 3 - WA 129 was formerly part of PSH 3
WA 125/OR 11
WA 35/OR 35 - WA 35 only exists in theory, not signed or maintained by the state
WA 433/unnumbered ramps to US 30
Quote from: IowaTraveler on June 20, 2022, 11:56:42 PM
Here are the results for Iowa:
IA-MN:
Formerly, IA 91 & MN 91
IA 60 & MN 60
IA 86 & MN 86
IA 4 & MN 4
IA 15 & MN 15
IA 27
IA 139 & MN 139
IA 76 & MN 76
IA 26 & MN 26
IA-WI:
IA 9 & WI 82
IA-IL:
IA 64 & IL 64
IA 136 & IL 136
IA 92 & IL 92
IA 163
Formerly, IA 2 & IL 9
IA-MO:
IA 27 & MO 27
IA 81 & MO 81
IA 202 & MO 202
IA 5 & MO 5
IA 148 & MO 148
IA-NE:
IA 2 & NE 2
IA 165 & Abbott Drive
IA 175 & NE 51
IA-SD:
IA 3 & SD 50
Formerly, IA 403 & SD 48
IA 10 & SD 46
IA 9 & SD 42
Out of the 24 current state highways in Iowa that cross a border, 16 of them keep their number in the neighboring state (So, 2/3 of them). It makes sense for it to be a fairly high portion of highways, since Iowa has historically put a heavy emphasis on route continuity with neighboring states (To the point where the original establishment of Iowa's highway system in 1920 prioritized route continuity over creating a numbering system).
Formerly, IA 370 and NE 370 linked up, but that went away when the current US 34 bridge was built south of Bellevue.
Iowa made a conscious effort to have the numbers not change at the border with the 1969 renumbering.
Quote from: davewiecking on June 20, 2022, 04:00:51 PM
WV 24/3, 12/2 and 12/1 keep the dual numbers into MD, as does single-numbered 12. 12/7 seems to be multiple roads which bounce back and forth.
No, they don't. Those are county route numbers specific to Preston County, West Virginia. Those numbers showing in Garrett County in Google Maps is because of a bad job by Google Maps, not an indication those numbers are carried across. Same thing with CR 12/7 - there's just one road with that number.
Quote from: Dirt Roads on June 20, 2022, 09:38:45 AM
*LSR-857 in Monongalia County is the only LSR route that is only in one county. If I my suspicions are correct, the designation LSR is supposed to mean "long secondary route" where the number stays the same between counties. The other two that I know of are LSR-21 (former US-21) in Kanawha, Jackson and Wood counties; and LSR-73 (former WV-73) in Marion and Monongalia counties.
The "LSR" routes get signed with shields comparable to what is done with a WV route, although internally they are still considered part of the county route system. Numbers do get coordinated across county lines. There is also a "LSR"-type CR 151 along the former route of US 33 between Buckhannon and Norton in Upshur and Randolph Counties.
CR 73 (old WV 73) between Morgantown and Fairmont isn't treated like a LSR. It's just a plain old county route where they happened to use the same number in both counties on adjoining segments since the number was available in both counties. Other than a one-off at the US 119 intersection, it doesn't get state route-like signage.
There are other sections of former WV 73 in both Marion and Monongalia that get fractional route numbers since they aren't connected to that segment of CR 73. The CR 73/73 number for the Coopers Rock area segment in Monongalia County continues into Preston County.
Nevada (4/17)
Oregon border (1/2)
NV 140/OR 140
NV 292/county road in Harney County
Idaho border (0/1)
NV 225/ID 51
California border (3/10)
NV 28/CA 28
NV 88/CA 88
NV 338/CA 182
NV 359/CA 167
NV 264/CA 266
NV 266/CA 266
NV 267/NPS road in Death Valley N.P.
NV 373/CA 127
NV 372/CA 178
NV 164/County road in San Bernardino County
Utah border (0/3)
NV 233/UT 30
NV 487/UT 21
NV 319/UT 56
Arizona border (0/1)
NV 163/AZ 95
Quote from: Bitmapped on June 21, 2022, 08:30:23 PM
Quote from: Dirt Roads on June 20, 2022, 09:38:45 AM
*LSR-857 in Monongalia County is the only LSR route that is only in one county. If I my suspicions are correct, the designation LSR is supposed to mean "long secondary route" where the number stays the same between counties. The other two that I know of are LSR-21 (former US-21) in Kanawha, Jackson and Wood counties; and LSR-73 (former WV-73) in Marion and Monongalia counties.
The "LSR" routes get signed with shields comparable to what is done with a WV route, although internally they are still considered part of the county route system. Numbers do get coordinated across county lines. There is also a "LSR"-type CR 151 along the former route of US 33 between Buckhannon and Norton in Upshur and Randolph Counties.
CR 73 (old WV 73) between Morgantown and Fairmont isn't treated like a LSR. It's just a plain old county route where they happened to use the same number in both counties on adjoining segments since the number was available in both counties. Other than a one-off at the US 119 intersection, it doesn't get state route-like signage.
There are other sections of former WV 73 in both Marion and Monongalia that get fractional route numbers since they aren't connected to that segment of CR 73. The CR 73/73 number for the Coopers Rock area segment in Monongalia County continues into Preston County.
I'm curious as to how many of the county routes get signed like they were primary state or US routes.
CR 120 is signed at the junction of US 52 near Bramwell. CR 73, CR 151, CR 857, and of course CR 21 have been mentioned. I know there's independent signage for CR 507 near Weirton, and possibly another route in the northern panhandle.
Since MA-CT and MA-RI have been done, I'll do the rest of MA's borders
MA-NY
Roads that do: 23, 71, I-90, 295, US 20, 43, 2
Roads that do not: NY 344, MA 102
MA-VT
Road that do: US 7, 8, 8A, 112, US 5, I-91, 142
Roads that do not: NONE
MA-NH
Roads that do: 63, 10, 78, 32, 12, US 202, 119, 31, 13, 111, US 3, 3A, 38, I-93, 28, 97, 125, 121A :bigass:, 108, 150, I-95, US 1, 286 (3x), 1A
Roads that do not: NH 123A, NH 124, NH 128, NH 121
Quote from: hbelkins on June 22, 2022, 02:53:51 PM
CR 120 is signed at the junction of US 52 near Bramwell. CR 73, CR 151, CR 857, and of course CR 21 have been mentioned. I know there's independent signage for CR 507 near Weirton, and possibly another route in the northern panhandle.
You are correct. There is also CR-208 that runs east-west between WV-2 at the Mountaineer Racetrack near New Cumberland and the Hilltop Drive-in Theatre on WV-8 near Chester. By the way, both CR-507 and CR-208 are shown as LSR routes in the most recent route log (2015), as are CR-120 and CR-151. CR-707 to the FBI Fingerprinting Center north of Clarksburg is also shown as an LSR route. All of which are in singular counties. Oops.
Michigan - Just one. M-49 and OH-49.
Quote from: jp the roadgeek on June 22, 2022, 03:30:05 PM
MA-VT
Roads that do not: NONE
I did Vermont upthread. And while I didn't count VT 100 because it's concurrent with VT 8, one could argue that VT 100 fits the bill of a state road that doesn't keep its number across the line.
Oregon:
Port Cathalmet Ferry/WA 409. Oregon side not numbered.
Lewis and Clark Bridge/WA 433 technically, WA 433 physically enters Oregon and ends where the roadway makes land fall just north of the US 30 interchange
Bridge of the Gods; unnumbered on both sides.
OR 35/WA 35 not signed as such on the Washington side
OR 332 - ends at a T intersection on the stateline
OR 339/Old Milton Highway - unnumbered on Washington side. Former (precursor to?) WA 125?
OR 11/WA 125
OR 3/WA 129
OR 86/NF 452
Brownlee-Oxbow Hwy/ID 71; despite OSM's claims, not OR 71 on the Oregon side, and not part of the ORH system. However, at some point I'll do a field check when I do my OR 86 clinch...
OR 52/ID 52
OR 452/Stateline Rd
OR 453 straddles the OR/ID border along Stateline Rd for a mile. technicality
OR 454/Red Top Rd
OR 201/ID 19
Fields-Denio Rd/NV 292
OR 140/NV140
ORH 50/CR 114
OR 39/CA 139
CA 161; straddles OR/CA border for several miles. technicality
NJ's borders:
NJ-NY:
Roads that do: 495, 440, 17, 94, 284
Roads that do not: NY-340 (road continues as a country route), NY-303, NY-304, NY-45, NY-210, NJ-23
NJ-PA:
Roads that do: 179, 413, 73, 90
Roads that do not: The other end of NJ-94 :bigass:, PA-263, PA-532*
*PA-532 ends a little before the bridge to NJ but still very close to the border*
So it seems like NJ is generally even with roads that do and roads that do not cross the border. This was quite interesting to do! :-D
Quote from: 1995hoo on June 20, 2022, 08:40:45 AM
VA-/KY-80
There is also MO 80, which used to connect to KY/VA 80 via a ferry that is no longer in service.
Quote from: tsmatt13 on June 23, 2022, 06:49:54 AM
NJ-PA:
Roads that do: 179, 413, 73, 90
Nope. PA does not duplicate interstate and state routes unless created by a renumbering. PA has I-90 (yes, it's almost 400 miles away, but it's there).
Quote from: jp the roadgeek on June 30, 2022, 10:28:05 PM
Nope. PA does not duplicate interstate and state routes unless created by a renumbering. PA has I-90 (yes, it's almost 400 miles away, but it's there).
Thanks for pointing that out. On Google Maps the 90 number is still there for the PA section of the road but there is not a real PA-90 route there. :-/
I seem to be picking up a theme here. States that organize their state highway numbers based on a grid (like Florida, Indiana, and South Dakota) or by numerical ranges based on the county (like Nevada) tend not to have highways that keep their numbers across the state line - which I suppose makes sense, given that those states are all doing their own thing, presumably without regard to what numbers the neighboring states have given the roads. In your opinion, does my assessment seem right?
Quote from: KCRoadFan on July 01, 2022, 01:20:46 AM
I seem to be picking up a theme here. States that organize their state highway numbers based on a grid (like Florida, Indiana, and South Dakota) or by numerical ranges based on the county (like Nevada) tend not to have highways that keep their numbers across the state line - which I suppose makes sense, given that those states are all doing their own thing, presumably without regard to what numbers the neighboring states have given the roads. In your opinion, does my assessment seem right?
Depends. That state could be doing its own thing, but the neighboring states might still strive for continuity. Or it might not even be a clear either-or situation.
For an interesting example, Kansas has this cool thing where the three westernmost N-S state highways are 23—25—27. Oklahoma doesn't do the same thing, yet they carried the 23 number across into Oklahoma anyway. Even more interestingly, though, the two routes didn't immediately connect to each other, as K-23's terminus was short of the state line, and Kansas extended K-23 in a joint decisions with Oklahoma for the purpose of route number continuity.
Quote from: Oklahoma Department of Highways – Office of the Director – 14-DEC-1959
HIGHWAY ROUTING AND NUMBERING NOTES FROM JOINT MEETING, OKLAHOMA AND KANSAS HIGHWAY COMMISSIONS AT WICHITA, KANSAS ON FRIDAY, DECEMBER 11, 1959
4. In Meade County, Kansas, Kansas route 23 will be swung southwesterly to enter Oklahoma in line with SH 23, northeast of Forgan. The route number (23) will be common to both states; it will be carried into Texas south of Elmwood in Beaver County. The alignment of this Kansas connection is properly shown on the 1959 Oklahoma Highway map.
And, at first glance, it might appear that they didn't likewise care about route number continuity with K-25, considering they kept the OK-136 number. But actually, when you dig into it, you find that they actually had a reason for that too.
Quote
3. Kansas is planning a new route, Kansas 25 to run south from Feterite in Stephens County, straight to the intersection north of Guymon. Although this route will be SH 25 in Kansas, it will remain SH 136 in Oklahoma, since the connecting route in Texas is numbered 136.
Quote from: IowaTraveler on June 20, 2022, 11:56:42 PM
Here are the results for Iowa:
IA-MN:
Formerly, IA 91 & MN 91
IA 60 & MN 60
IA 86 & MN 86
IA 4 & MN 4
IA 15 & MN 15
IA 27
IA 139 & MN 139
IA 76 & MN 76
IA 26 & MN 26
IA-WI:
IA 9 & WI 82
IA-IL:
IA 64 & IL 64
IA 136 & IL 136
IA 92 & IL 92
IA 163
Formerly, IA 2 & IL 9
IA-MO:
IA 27 & MO 27
IA 81 & MO 81
IA 202 & MO 202
IA 5 & MO 5
IA 148 & MO 148
IA-NE:
IA 2 & NE 2
IA 165 & Abbott Drive
IA 175 & NE 51
IA-SD:
IA 3 & SD 50
Formerly, IA 403 & SD 48
IA 10 & SD 46
IA 9 & SD 42
Out of the 24 current state highways in Iowa that cross a border, 16 of them keep their number in the neighboring state (So, 2/3 of them). It makes sense for it to be a fairly high portion of highways, since Iowa has historically put a heavy emphasis on route continuity with neighboring states (To the point where the original establishment of Iowa's highway system in 1920 prioritized route continuity over creating a numbering system).
There's also IA 92 and NE 92, part of the very important multi-state route from Torrington, WY to La Moille, IL.
SD:
SD-MT:
SD 20 to MT S-328
SD-WY:
SD 34 to WY 24 (note, this used to be SD 24 when the systems were first made, but SD extended 34 over it and got rid of the number continuity)
SD-NE:
SD 71 to NE 71 (note, this is out of the SD grid but was kept as part of MSR 71)
SD 407 to NE 87
SD 391 to NE 27
SD 73 to NE 61
SD 47 to NE 137
SD 43 to NE 11
SD 37 to NE 14
SD 19 to NE 15
SD-IA:
SD 50 to IA 3
SD 48 to IA 403 (formerly)
SD 46 to IA 10
SD 42 to IA 9
SD-MN:
SD 11 to MN 269
SD 34 to MN 30
SD 30 to MN 19
SD 28 to MN 271
SD 22 to MN 68
SD 20 to MN 40
SD 10 to MN 28
SD-ND
SD 127 to ND 127 (probably ND keeping the number, since this fits SD's numbering system)
SD 25 to ND 18
SD 27 to ND 32
SD 37 to ND 1
SD 45 to ND 3
SD 1804 to ND 1804 (Dakota River Roads, doesn't really count)
SD 63 to ND 6
SD 65 to ND 31
SD 73 to ND 49
SD 75 to ND 8
SD 79 to ND 22
Quote from: KCRoadFan on July 01, 2022, 01:20:46 AM
I seem to be picking up a theme here. States that organize their state highway numbers based on a grid (like Florida, Indiana, and South Dakota) or by numerical ranges based on the county (like Nevada) tend not to have highways that keep their numbers across the state line - which I suppose makes sense, given that those states are all doing their own thing, presumably without regard to what numbers the neighboring states have given the roads. In your opinion, does my assessment seem right?
Yeah seems legit, WY numbers their road by county as well and there's really no carryover there either except for WY/MT 59, which just so happens to be in the "50-69" county in WY (Campbell).
Quote from: kphoger on July 01, 2022, 09:25:37 AM
Quote from: KCRoadFan on July 01, 2022, 01:20:46 AM
I seem to be picking up a theme here. States that organize their state highway numbers based on a grid (like Florida, Indiana, and South Dakota) or by numerical ranges based on the county (like Nevada) tend not to have highways that keep their numbers across the state line - which I suppose makes sense, given that those states are all doing their own thing, presumably without regard to what numbers the neighboring states have given the roads. In your opinion, does my assessment seem right?
Depends. That state could be doing its own thing, but the neighboring states might still strive for continuity. Or it might not even be a clear either-or situation.
[...]
Given that Oklahoma has never had much of a state route numbering system, we've been one of the most accommodating states when it comes to renumbering to match surrounding states. We've gone to extremes to do this, such as duplicating numbers that already exist (37, 4) and renumbering routes that extend halfway across the state (152, which was originally 41 and got renumbered to match TX-152). We even renumbered the only state highway that connects with New Mexico to match theirs, 325...and then they renumbered theirs to 456. Jerks.
I'll do Texas:
Only the ones that retain the number.
Clockwise from Anthony:
TX-18 to NM-18
TX-128 to NM-128
The curious case of FM-769 that is State Line Road. Is there half a Farm-to-Market road in New Mexico
TX-125 to NM-125
TX-114 to NM-114
(BL-40 doesn't even continue into New Mexico!!)
TX-136 to OK-136
TX-15 to OK-15
TX-33 to OK-33
TX-152 to OK-152
TX-6 to OK-6
TX-79 to OK-79
TX-78 to OK-78
TX-37 to OK-37
TX Loop 151 to AR-151
TX-12 to LA-12
TX-82 to LA-82
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
Quote from: gonealookin on June 21, 2022, 09:20:32 PM
Nevada (4/17)
Oregon border (1/2)
NV 140/OR 140
NV 292/county road in Harney County
Idaho border (0/1)
NV 225/ID 51
California border (3/10)
NV 28/CA 28
NV 88/CA 88
NV 338/CA 182
NV 359/CA 167
NV 264/CA 266
NV 266/CA 266
NV 267/NPS road in Death Valley N.P.
NV 373/CA 127
NV 372/CA 178
NV 164/County road in San Bernardino County
Utah border (0/3)
NV 233/UT 30
NV 487/UT 21
NV 319/UT 56
Arizona border (0/1)
NV 163/AZ 95
The current count for Nevada may be four, but historically there were two more:
- Present-day SR 225 was numbered SR 51 prior to 1976, so there was NV 51/ID 51. (Note that Nevada changed what had been a portion of SR 11 and the entirety of SR 43 to create SR 51 circa 1964-1965, presumably to match Idaho. SR 51 was changed to SR 225 circa 1976 due to the statewide renumbering.)
- Present-day SR 233 was numbered SR 30 prior to 1976, so there was NV 30/UT 30. (On the Utah side, the route was previously UT 70 and they changed to match Nevada circa 1966. Nevada changed circa 1976 due to the statewide renumbering.)
Quote from: KCRoadFan on July 01, 2022, 01:20:46 AM
I seem to be picking up a theme here. States that organize their state highway numbers based on a grid (like Florida, Indiana, and South Dakota) or by numerical ranges based on the county (like Nevada) tend not to have highways that keep their numbers across the state line - which I suppose makes sense, given that those states are all doing their own thing, presumably without regard to what numbers the neighboring states have given the roads. In your opinion, does my assessment seem right?
Yes, to an extent.
At least for Nevada, it is interesting that three of the four numbers currently carried into adjoining states are on route numbers that existed prior to the 1976 state highway renumbering: 28, 88 & 140. Given the county-clustering number method that was adopted during the renumbering, NDOT specifically retained these three pre-1976 numbers despite the numbers not fitting in to the new cluster scheme (although SR 140 was originally planned to become SR 291 during renumbering).
So that shows there was some desire for some route number continuity with other states on Nevada's part. SR 28 & SR 88 made sense given the regional travel around the Lake Tahoe region, and SR 140 was the number advocated for the "Winnemucca to the Sea" highway. I suppose there wasn't as much tourism concern with 30/233 and 51/225 then, because otherwise it would have been simple enough to retain those numbers post-renumbering as well...
PA:
PA/OH
PA 226/OH 84
198/167
285/85
58/5
358/88
718/305
318/304
317/630
108/unnumbered
351/617
51/14
251/154
68/39
PA/WV
unnumbered/105
unnumbered/Alt 27
844/27
331/67
21/891
18/69
218/218
43/43
857/857
381/unnumbered
281/26
PA/MD
unnumbered/42
669/669
unnumbered/546
160/47
96/35
326/unnumbered
26/unnumbered
655/unnumbered
928/unnumbered
unnumbered/615
456/unnumbered
75/494
416/unnumbered
63/163
316/60
997/64
16/140
134/unnumbered
194/194
97/97
94/30
516/86
unnumbered/45
24/23
unnumbered/24
unnumbered/624
74/165
unnumbered/623
272/272
841/213
896/unsigned 896
PA/DE
unnumbered/7
41/41
82/82
52/52
unnumbered (former 100)/100
261/261
491/491
PA/NJ
unnumbered/90
73/73
413/413
179/179
263/unnumbered
unnumbered/12?
unnumbered/94?
739/unnumbered
PA/NY
434/55?
652/52
371/unnumbered
191/unnumbered
92/79
unnumbered/7A
29/7
167/unnumbered
267/26
858/unnumbered
187/282
199/34
14/14
328/328
249/36
244/248A
449/19
44/unnumbered
446/305
646/16
346/280
69/unnumbered
958/unnumbered
426/426
474/474
430/430
5/5
Ontario: Matching numbers in bold.
MB/ON:
MB TCH 1 / ON 17
MN/ON:
MN 72 / ON 11 (though MN 11 is very close to the border crossing)
US 53&71 / ON 71
MN 61 / ON 61
MI/ON:
I-69&94 / ON 402
Connection to I-75 / ON 3
NY/ON:
NY 384 / ON 420
I-190 / ON 405
I-81 / ON 137
NY 812 / ON 16
QC/ON:
A-20 / ON 401
A-40 / ON 417
Connection to QC 344 / ON 34
QC 148 / ON 148
QC 101 / ON 63
Connection to QC 101 / ON 65
QC 117 / ON 66
QC 388 / ON 101
Quote from: dvferyance on July 01, 2022, 10:08:23 PM
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
It seems strange that a state would use a highway number like 35 for such a short highway.
Quote from: SD Mapman on July 01, 2022, 08:42:32 PM
Quote from: IowaTraveler on June 20, 2022, 11:56:42 PM
Here are the results for Iowa:
IA-MN:
Formerly, IA 91 & MN 91
IA 60 & MN 60
IA 86 & MN 86
IA 4 & MN 4
IA 15 & MN 15
IA 27
IA 139 & MN 139
IA 76 & MN 76
IA 26 & MN 26
IA-WI:
IA 9 & WI 82
IA-IL:
IA 64 & IL 64
IA 136 & IL 136
IA 92 & IL 92
IA 163
Formerly, IA 2 & IL 9
IA-MO:
IA 27 & MO 27
IA 81 & MO 81
IA 202 & MO 202
IA 5 & MO 5
IA 148 & MO 148
IA-NE:
IA 2 & NE 2
IA 165 & Abbott Drive
IA 175 & NE 51
IA-SD:
IA 3 & SD 50
Formerly, IA 403 & SD 48
IA 10 & SD 46
IA 9 & SD 42
Out of the 24 current state highways in Iowa that cross a border, 16 of them keep their number in the neighboring state (So, 2/3 of them). It makes sense for it to be a fairly high portion of highways, since Iowa has historically put a heavy emphasis on route continuity with neighboring states (To the point where the original establishment of Iowa's highway system in 1920 prioritized route continuity over creating a numbering system).
There's also IA 92 and NE 92, part of the very important multi-state route from Torrington, WY to La Moille, IL.
Thanks for the correction. I've fixed my post. I don't know how I managed to miss that one, especially since I was thinking about Hwy 92's four-state continuity while writing that post. :-/
You mentioned NC on the VA side but there are quite a few on the SC side too:
NC/GA/SC/GA 28
NC/SC 18
NC/SC 49
NC/SC 38
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
It seems strange that a state would use a highway number like 35 for such a short highway.
MN 20 is another such road unworthy of a low number, running just 7 miles from MN 19 to MN 50.
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
It seems strange that a state would use a highway number like 35 for such a short highway.
See, in Utah the general rule is that anything big has a low number (2-digit, generally), but the opposite is not necessarily true. There are seven 1/2-digit routes less than two miles long, and SR 93 barely breaks a quarter mile. So for me, putting a high number on some long highway is far weirder than a low number on a short one.
Most of that is due to deletion and reassignment of those lower numbers, but there are some holdovers from the original weak number clustering scheme which more or less increased numbers from SW to NE. SR 17, 22, and 25 are all original routes that seem like they should belong on bigger/longer roads.
I think it's hilarious that in post number 61 he lists IA 2 becoming NE 2. :bigass:
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
Quote from: dvferyance on July 01, 2022, 10:08:23 PM
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
It seems strange that a state would use a highway number like 35 for such a short highway.
WA 35 is literally the Washington half of the Hood River Bridge and the roadway to WA 14 on the north shore of the Columbia, but it's unsigned and just as a continuation of OR 35, which IIRC officially doesn't go north of I-84.
Quote from: Bickendan on July 06, 2022, 10:14:34 AM
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
Quote from: dvferyance on July 01, 2022, 10:08:23 PM
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
It seems strange that a state would use a highway number like 35 for such a short highway.
WA 35 is literally the Washington half of the Hood River Bridge and the roadway to WA 14 on the north shore of the Columbia, but it's unsigned and just as a continuation of OR 35, which IIRC officially doesn't go north of I-84.
CT 35 is also a short extension from another state (NY), but the length ratio is only 4:1.
Quote from: 1 on July 06, 2022, 11:53:40 AM
Quote from: Bickendan on July 06, 2022, 10:14:34 AM
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
Quote from: dvferyance on July 01, 2022, 10:08:23 PM
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
It seems strange that a state would use a highway number like 35 for such a short highway.
WA 35 is literally the Washington half of the Hood River Bridge and the roadway to WA 14 on the north shore of the Columbia, but it's unsigned and just as a continuation of OR 35, which IIRC officially doesn't go north of I-84.
CT 35 is also a short extension from another state (NY), but the length ratio is only 4:1.
CT-55 is approximately 46.4:1 with NY-55.
What really should be how many roads keep their number out of the many that cross a border to those that don't excluding New England of course as almost all numbers keep continuity.
In NJ surprisingly there are only a few along the long stretch of Delaware River with PA. NY has four ( five it you count Route 440 twice) but many other roads cross but change. NY 45 is most Bizarre as it don't become anything but a named road in NJ. Some NJ 500 routes become named roads in NY and a few become NY state numbers like CR 501, 503, and 505 as well as CR 511 with the rest being interstate or US routes or NJ 495 that is questionable being NY 495 isn't signed in Manhattan. NJ 23 becomes County in NY the opposite of other cross state roads.
Maybe a ratio thread should be created to show the percentage.
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
Quote from: dvferyance on July 01, 2022, 10:08:23 PM
WI-83 becomes IL-83
WI-78 becomes IL-78
WI-35 becomes IL-35 (The former is the longest in the state the latter the shortest in the state.)
WI-70 becomes MN-70
WI-243 becomes MN-243
At one time WI-80 became IL-80 but Illinios renumbered it because of I-80.
When WI-42 reached Illinios it became IL-42. Both have since been renumbered.
It seems strange that a state would use a highway number like 35 for such a short highway.
IL35 > CO35 (https://en.wikipedia.org/wiki/Colorado_State_Highway_35)
Quote from: JayhawkCO on July 06, 2022, 03:25:06 PM
IL35 > CO35 (https://en.wikipedia.org/wiki/Colorado_State_Highway_35)
CO-35 > WY-35 (https://en.wikipedia.org/wiki/Wyoming_Highway_35)
(And WY-35 > OK-35 (https://en.wikipedia.org/wiki/List_of_unsigned_Oklahoma_State_Highways#State_Highway_35) too! :bigass:)
Quote from: Bickendan on June 22, 2022, 11:27:42 PM
technically, WA 433 physically enters Oregon and ends where the roadway makes land fall just north of the US 30 interchange
Wait, so WSDOT somehow maintains the ramps leading up to US 30?
Quote from: TheHighwayMan394 on July 05, 2022, 11:07:07 PM
Quote from: Flint1979 on July 04, 2022, 06:47:52 PM
It seems strange that a state would use a highway number like 35 for such a short highway.
MN 20 is another such road unworthy of a low number, running just 7 miles from MN 19 to MN 50.
This could change if MnDOT ever decides to reroute US 61 onto 316. My read of the Constitutional Route descriptions suggests that they'd have to keep the leg of existing 61 between 50 and Hastings on the system.
Quote from: Bruce on July 07, 2022, 04:37:42 PM
Quote from: Bickendan on June 22, 2022, 11:27:42 PM
technically, WA 433 physically enters Oregon and ends where the roadway makes land fall just north of the US 30 interchange
Wait, so WSDOT somehow maintains the ramps leading up to US 30?
ODOT has the ramps and the road on the physical Oregon soil, no ORH number or all part of ORH 92/US 30 maintanence. WA 433 is the bridge deck itself on the Oregon side.
Quote from: tsmatt13 on June 30, 2022, 11:01:58 PM
Quote from: jp the roadgeek on June 30, 2022, 10:28:05 PM
Nope. PA does not duplicate interstate and state routes unless created by a renumbering. PA has I-90 (yes, it's almost 400 miles away, but it's there).
Thanks for pointing that out. On Google Maps the 90 number is still there for the PA section of the road but there is not a real PA-90 route there. :-/
The bridge is signed as NJ 90 on the Pennsylvania side, but New Jersey considers the state route to end at the state line.
Quote from: tsmatt13 on June 23, 2022, 06:49:54 AM
NJ's borders:
NJ-NY:
Roads that do: 495, 440, 17, 94, 284
Roads that do not: NY-340 (road continues as a country route), NY-303, NY-304, NY-45, NY-210, NJ-23
NJ-PA:
Roads that do: 179, 413, 73, 90
Roads that do not: The other end of NJ-94 :bigass:, PA-263, PA-532*
*PA-532 ends a little before the bridge to NJ but still very close to the border*
So it seems like NJ is generally even with roads that do and roads that do not cross the border. This was quite interesting to do! :-D
I believe once upon a time NJ and DE had a multistate Route which has none across its two border crossings.
NJ 48 that ends at US 130 in Penns Grove used to connect via a ferry no longer in service to DE 48.
Plus PA 100 used to continue south of West Chester, PA and end at DE 100.
MD 299 used to connect with DE 299.
US 301 used to be MD 71 and DE 71. That's why DE 71 once had a useless overlap with US 301 up to the state line before DE 896 was rerouted to Boyd's Corner. DE 71 south of Middletown is old 896.