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Author Topic: Which states allow number duplication?  (Read 3521 times)

jp the roadgeek

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Re: Which states allow number duplication?
« Reply #50 on: April 22, 2018, 09:26:00 PM »


There are also a handful of cases where a state route is a non-Interstate extension of an Interstate:

- NY 390
- NY 481
- NY 495
- NY 590
- NY 690
- NY 787
- NY 890

FTFY


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Interstates I've clinched: 97, 290 (MA), 291 (CT), 291 (MA), 293, 295 (DE-NJ-PA), 295 (RI-MA), 384, 391, 395 (CT-MA), 395 (MD), 495 (DE), 610 (LA), 684, 691, 695 (MD), 695 (NY), 795 (MD)

cl94

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Re: Which states allow number duplication?
« Reply #51 on: April 22, 2018, 09:37:36 PM »

Purposely excluded from my list of extensions because it's not an extension. It's a spur off of I-787. I-787 crosses the Collar City Bridge and ends in Troy.
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Bickendan

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Re: Which states allow number duplication?
« Reply #52 on: April 22, 2018, 11:45:13 PM »

Oregon has:
I-82/OR 82
I-205/OR 205
While Oregon doesn't allow for duplication outside these two pairs for the routes, the highways have quite a few duplications with the routes.
3 Oswego Hwy and 3 Enterprise-Lewiston Hwy
5 John Day Hwy and 5 Pacific Hwy
6 Old Oregon Trail and 6 Wilson River Hwy
7 Central Oregon Hwy and 7 Baker-Copperfield Hwy/Whitney Hwy
8 Oregon-Washington Hwy and 8 Gales Creek Rd/TV Hwy
10 Wallowa Lake Hwy and 10 Farmington Rd/Beaverton-Hillsdale Hwy
11 Enterprise-Lewiston Hwy and 11 Oregon-Washington Hey
18 Willamette Hwy and 18 Salmon River Hwy
19 Fremont Hwy and 19 John Day Hwy
20 Klamath Falls-Lakeview Hwy and 20 Newport-Corvallis Hwy/Corvallis-Lebanon Hwy/Corvallis-Albany Hwy/Santiam Hwy/McKenzie-Bend Hwy/Central Oregon Hwy
22 Crater Lake Hwy and 22 Three Rivers Hwy/Willamina-Salem Hwy/North Santiam Hwy
26 Mt Hood Hwy* and 26 Sunset Hwy/Mt Hood Hwy*/Warm Springs Hwy/Madras-Prineville Hwy/Ochoco Hwy/John Day Hwy
27 Alsea Hwy and 27 Crooked River Hwy
30 Willamina-Salem Hwy and: 30 Lower Columbia River Hwy/Columbia River Hwy/Historic Columbia River Hwy(x3)/Mosier-The Dalles Hwy/Pendleton Hwy/La Grande Baker Hwy(x2)/Ontario Spur; 30Byp Northeast Portland Hwy; 30B Huntington Hwy/Ontario Spur
31 Albany Corvallis Hwy and 31 Fremont Hwy
35 Coos Bay-Roseburg Hwy and 35 Mt Hood Hwy
36 Pendleton-Cold Springs Hwy and 36 Mapleton-Junction City Hwy
37 Wilson River Hwy and 37 Pendleton-Cold Springs Hwy and Pendleton-John Day Hwy
38 Oregon Caves Hwy and 38 Umpqua Hwy
39 Salmon River Hwy; 39Y McMinnville Spur and 39 Klamath Falls-Lakeview Hwy/Klamath Falls-Malin Hwy/Hatfield Hwy
42 Sherman Hwy and 42 Coos Bay-Roseburg Hwy; 42S Coquille-Bandon Hwy
43 Monmouth-Independence Hwy and 43 Oswego Hwy
46 Necanicum Hwy and 46 Oregon Caves Hwy
47 Sunset Hwy and 47 Mist-Clatskanie Hwy/Nehalem Hwy/TV Hwy
51 Wilsonville-Hubbard Hwy and 51 Monmouth-Independence Hwy/Independence Hwy
52 Heppner Hwy and 52 Payette Spur
53 Warm Springs Hwy and 53 Necanicum Hwy
58 Albany-Junction City Hwy and 58 Willamette Hwy
62 Florence-Eugene Hwy and 62 Crater Lake Hwy
66 La Grande-Baker Hwy and 66 Green Springs Hwy
70 McNary Hwy and 70 Dairy-Bonanza Hwy
82 McNary Hwy and 82 Wallowa Hwy
103 Fishhawk Falls Hwy signed as itself
104 Fort Stevens Hwy signed as itself
104Y Fort Stevens Spur would be signed as 104S
105 Warrenton-Astoria Hwy would be signed as 105; 105 Eugene-Sprinfield Hwy
120 Swift Hwy would be signed as 120
130 Little Nestuca Hwy signed as itself
131 Netarts Hwy signed as itself
138 North Umpqua Hwy signed as itself
141 Beaverton-Tualatin Hwy would be signed as 141
153 Belleview-Hopewell Hwy would be signed as 153
154 Lafayette Hwy would be signed as 154
155 Amity-Dayton Hwy would be signed as 155
173 Timberline Hwy would be signed as 173
180 Eddyville-Blodgett Hwy would be signed as 180
182 Otter Rock Hwy would be signed as 182
194 Monmouth Hwy would be signed as 194
200 Territorial Hwy would be signed as 200
201 Alsea-Deadwood Hwy and 201 Olds Ferry-Ontario Hwy/Succor Creek Hwy/Homedale Spur
205 East Portland Frwy and 205 French Glen Hwy
210 Corvallis-Lebanon Hwy and 210 Scholls Hwy
211 Albany-Lyons Hwy and 211 Woodburn-Estacada Hwy/Eagle Creek-Sandy Hwy
212 Halsey-Sweet Home Hwy and 212 Clackamas-Boring Hwy
222 Springfield-Creswell Hwy would be signed as 222
225 McVay Hwy would be signed as 225
226 Goshen-Divide Hwy and 226 Albany-Lyons Hwy
227 Eugene-Springfield Hwy and 227 Tiller-Trail Hwy
228 Springfield Hwy and 228 Halsey-Sweet Home Hwy
229 Mapleton-Junction City Hwy and 229 Siletz Hwy
230 Tiller-Trail Hwy and 230 West Diamond Lake Hwy
233 West Diamond Lake Hwy and 233 Lafayette Hwy/Amity-Dayton Hwy
234 Oakland-Shady Hwy and 234 Sams Valley Hwy
237 Myrtle Creek Hwy and 237 Cove Hwy/La Grande-Baker Hwy
240 Cape Arago Hwy and 240 Yamhill-Newburg Hwy
241 Coos River Hwy should be signed as itself
242 Powers Hwy and 242 McKenzie Hwy
244 Coquille-Bandon Hwy and 244 Ukiah-Hilgard Hwy
The following should be signed as themselves if not already:
250
251
255
260
273
281
282
293
331
332
334
335
339
350
351
361
370
372
380
402
410
413
414
420
422 (422Y -> 422S)
429
451
453
454
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jflick99

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Re: Which states allow number duplication?
« Reply #53 on: April 23, 2018, 01:26:42 AM »

At first I thought Kansas was one that did not allow it due to a number of state highways renumbered because of US and Interstate highways (24, 35, 69, 70, 135). Upon double checking, US 177 has 4 miles in Kansas to go along with a K-177. K-177 runs from Manhattan south to El Dorado, while US 177 ends in South Haven, 4 miles from Oklahoma. South Haven is about 60 miles southwest of El Dorado, so I can't imagine many people would mix them up.

It also appears that there were two separate K-150's in existence from 1955 to 1996, when the Olathe-Overland Park segment was decommissioned. The Marion-Elmdale segment has existed since 1937.
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froggie

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Re: Which states allow number duplication?
« Reply #54 on: April 23, 2018, 01:11:56 PM »

Purposely excluded from my list of extensions because it's not an extension. It's a spur off of I-787. I-787 crosses the Collar City Bridge and ends in Troy.

One could also argue that 890 is a spur instead of an extension, since I-890 technically ends at the Thruway (per NYSDOT shapefiles).
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formulanone

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Re: Which states allow number duplication?
« Reply #55 on: April 23, 2018, 09:52:03 PM »

Alabama originally tried to avoid route number duplication; US Routes did not have a state route of the same number. When Interstate routes were laid down, the state routes stayed the same (20, 22, 59, 65, 165)...though in most cases, they aren't close enough to be mixed up.

The only same-number route continuation is for I-759/AL 759 in Gadsden, which is entirely intentional.

County Route systems vary from county to county; they sometimes seem to avoid nearby routes, and other times, they do not.

froggie

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Re: Which states allow number duplication?
« Reply #56 on: April 24, 2018, 10:53:31 AM »

^ Huh...I was thinking more of the two County Road 20's that cross and even have interchanges with I-20/59, though I'm pretty sure the Greene County version (Exit 32/Boligee) still isn't signed at 20/59.
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formulanone

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Re: Which states allow number duplication?
« Reply #57 on: April 24, 2018, 12:37:47 PM »

^ Huh...I was thinking more of the two County Road 20's that cross and even have interchanges with I-20/59, though I'm pretty sure the Greene County version (Exit 32/Boligee) still isn't signed at 20/59.

That's right, at least one of them is signed: Exit 23 on I-20/59 is for CR 20.

Just passed by the CR43-near-US43 example last week, so it was in my head (couldn't get a good photo at 6am).

mrpablue

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Re: Which states allow number duplication?
« Reply #58 on: April 24, 2018, 02:36:43 PM »

Is Washington SR97 a thing, or is that an error on Maps?
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apeman33

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Re: Which states allow number duplication?
« Reply #59 on: May 01, 2018, 06:56:59 PM »

At first I thought Kansas was one that did not allow it due to a number of state highways renumbered because of US and Interstate highways (24, 35, 69, 70, 135). Upon double checking, US 177 has 4 miles in Kansas to go along with a K-177. K-177 runs from Manhattan south to El Dorado, while US 177 ends in South Haven, 4 miles from Oklahoma. South Haven is about 60 miles southwest of El Dorado, so I can't imagine many people would mix them up.

It also appears that there were two separate K-150's in existence from 1955 to 1996, when the Olathe-Overland Park segment was decommissioned. The Marion-Elmdale segment has existed since 1937.

Kansas generally doesn't but U.S. 177/K-177 is the most obvious exception. There are also two sections of K-8 because the highway in between the two sections became a U.S. route. And for a short period of time there were two K-171s.

But the prime example of Kansas' preference to avoid duplication is K-152. It was K-35 but then I-35 came along, so it was renumbered K-135. Then I-35W was changed to I-135, so it was changed again to K-152. K-235 wasn't an option because I-235 already existed and at the time there were no K-3xx routes so they didn't want to go with K-335 (which itself would have been changed when I-335 was designated, anyway).

Edit: I think the only reason there were two K-150s was that the now decommissioned segment was numbered to match up with MO-150. But why they didn't change the other one, I don't know unless someone thought they were far enough apart that it wasn't an issue.
« Last Edit: May 01, 2018, 07:00:47 PM by apeman33 »
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kendancy66

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Re: Which states allow number duplication?
« Reply #60 on: May 01, 2018, 07:27:56 PM »

Virginia does not typically allow duplication, although there are two three exceptions:

- VA 13 came into existence after US 13 was already around...in fact, there was already another VA 13 at the time (it was a state route extension of US 13, which did not yet exist on the mainland).

- VA 360 and US 360. VA 360 is an old alignment of US 360.

- US 33 and VA 33; VA 33 is a state route extension of US 33.

North Carolina does not typically allow duplication except in cases where a state route number is assigned to a future interstate corridor (NC 140/I-140, NC 295/I-295, etc).
Another exception is Sunset Lane in Annandale VA which is VA secondary route 895 which duplicates primary VA 895 toll road south of Richmond. Also since secondary routes in Virginia can duplicate in other counties there is a possibility that there may be other secondary routes numbered 895

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WillWeaverRVA

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Re: Which states allow number duplication?
« Reply #61 on: May 01, 2018, 07:36:05 PM »

Virginia does not typically allow duplication, although there are two three exceptions:

- VA 13 came into existence after US 13 was already around...in fact, there was already another VA 13 at the time (it was a state route extension of US 13, which did not yet exist on the mainland).

- VA 360 and US 360. VA 360 is an old alignment of US 360.

- US 33 and VA 33; VA 33 is a state route extension of US 33.

North Carolina does not typically allow duplication except in cases where a state route number is assigned to a future interstate corridor (NC 140/I-140, NC 295/I-295, etc).
Another exception is Sunset Lane in Annandale VA which is VA secondary route 895 which duplicates primary VA 895 toll road south of Richmond. Also since secondary routes in Virginia can duplicate in other counties there is a possibility that there may be other secondary routes numbered 895

SAMSUNG-SGH-I747



Secondary routes donít count since every county has its own set, and every county with a SR 664, 785, and 895 duplicates the primary routes with those numbers.
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Mapmikey

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Re: Which states allow number duplication?
« Reply #62 on: May 01, 2018, 08:22:57 PM »

The VA 664, 785, and 895 designations are indeed exceptions.  The secondary numbering system was specifically set up in 1933 to not duplicate primary route numbers, which is why all the VA 6xx, VA 7xx, and VA 8xx designations (100+ in total) in place at that time were renumbered.

It was also intentional that the secondary numbers repeated in all the counties.
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