Unusually numbered routes

[bulldog1979]

I'm surprised no one's mentioned New Mexico State Road 6563 yet. The highway connects to the Sacramento Peak National Solar Observatory, and it was named for the wavelength of the Hydrogen-alpha spectral line (6563 Ã...) used by the scientists to study the the solar chromosphere and to locate solar flares on the Sun. There's only two other extant four-digit highways in New Mexico, one of which is unsigned. Another highway, NM 2001, apparently named after 2001: A Space Odyssey may be decommissioned.

[Max Rockatansky]

I'm surprised no one's mentioned New Mexico State Road 6563 yet. The highway connects to the Sacramento Peak National Solar Observatory, and it was named for the wavelength of the Hydrogen-alpha spectral line (6563 Ã...) used by the scientists to study the the solar chromosphere and to locate solar flares on the Sun. There's only two other extant four-digit highways in New Mexico, one of which is unsigned. Another highway, NM 2001, apparently named after 2001: A Space Odyssey may be decommissioned.

2001 was still there as of 2012 when I last visited the Space Museum in Alamogordo. 

[bing101]

I-238 in  Hayward, CA since its the most notable 3di not connected for I-38. Also I-238 is an extension of CA-238. However there were rumors for some time that I-238 was going to connect to I-380 for the Southern Crossing but that never came into play though.

[Max Rockatansky]

I-238 in  Hayward, CA since its the most notable 3di not connected for I-38. Also I-238 is an extension of CA-238. However there were rumors for some time that I-238 was going to connect to I-380 for the Southern Crossing but that never came into play though.

I find it preferably just to call it CA 238...it's not like the State doesn't recognize them as the same route anyways.  I'm kind of surprised nobody has brought up CA 14U or former CA 86S. 

[TheGrassGuy]

I-238 in  Hayward, CA since its the most notable 3di not connected for I-38. Also I-238 is an extension of CA-238. However there were rumors for some time that I-238 was going to connect to I-380 for the Southern Crossing but that never came into play though.

Already in the OP.

[DJ Particle]

Also MN 610, which was numbered as a "3dus" of US 10, but with an insanely high number.

Take out the final RIROs on US-10 and just make the 610/10 corridor I-894.   

[FrCorySticha]

Speaking of 4-digit routes, North Dakota has 2: 1804 that runs along the north/east side of the Missouri River, and 1806 that runs along the south/west side of the river. Both are named for the years that the Lewis and Clark expedition came through the area.

[TheGrassGuy]

Speaking of 4-digit routes, North Dakota has 2: 1804 that runs along the north/east side of the Missouri River, and 1806 that runs along the south/west side of the river. Both are named for the years that the Lewis and Clark expedition came through the area.

At least ND and NM have logical and intuitive reasons for the numbers of these routes, whereas, say, FL doesn't.

[kphoger]

Wisconsin doesn't have state route numbers over 200 unless they're branches of a two-digit route (310's a branch of 10, 241's a branch of 41, etc.).

You're forgetting WI-243, which was numbered to be the same as its Minnesota counterpart across the St. Croix.

WI-243, which is a glorified bridge over the St Croix River at Osceola. There's no 43 or 143 nearby.

Should have read the thread.

[TheGrassGuy]

Wisconsin doesn't have state route numbers over 200 unless they're branches of a two-digit route (310's a branch of 10, 241's a branch of 41, etc.).

You're forgetting WI-243, which was numbered to be the same as its Minnesota counterpart across the St. Croix.

WI-243, which is a glorified bridge over the St Croix River at Osceola. There's no 43 or 143 nearby.

Should have read the thread.

So basically like NJ and NY-440? NJ 440 is the only NJ state route in the 400s.

[formulanone]

Wisconsin doesn't have state route numbers over 200 unless they're branches of a two-digit route (310's a branch of 10, 241's a branch of 41, etc.).

You're forgetting WI-243, which was numbered to be the same as its Minnesota counterpart across the St. Croix.

WI-243, which is a glorified bridge over the St Croix River at Osceola. There's no 43 or 143 nearby.

Should have read the thread.

So basically like NJ and NY-440? NJ 440 is the only NJ state route in the 400s.

There's an NJ Route 413, though signage is a little sparse:


NJ 439:


NJ 495, the I-495 that wasn't really never-was isn't but might as well be:

[apeman33]

K-383 is the only K-route with a number 300 or higher. On the other hand, it was once U.S. 383, so they just simply changed what kind of highway it was.

[formulanone]

K-383 is the only K-route with a number 300 or higher. On the other hand, it was once U.S. 383, so they just simply changed what kind of highway it was.

I thought I saw a K-368 sign for Pomona State Park...maybe an error sign?

[X99]

Speaking of 4-digit routes, North Dakota has 2: 1804 that runs along the north/east side of the Missouri River, and 1806 that runs along the south/west side of the river. Both are named for the years that the Lewis and Clark expedition came through the area.

South Dakota has the same highways 1804 and 1806. They connect end to end on either side of the Missouri River.

I have a few more for South Dakota:
SD 244. Used to be part of SD 87, never ran anywhere near its parent SD 44. They could have made it a western extension of SD 40 if you run a short concurrency with US 16A through Keystone.

Former SD 435 ran between I-90 and the front gate of Ellsworth AFB, but it was never signed, and it was removed when the interchange was relocated.

I would include CR 1416 in Box Elder, but that number, along with its name Old Highway 14-16, indicates its past as the US 14/16 expressway that predates the Interstate system.

[kphoger]

K-383 is the only K-route with a number 300 or higher. On the other hand, it was once U.S. 383, so they just simply changed what kind of highway it was.

I thought I saw a K-368 sign for Pomona State Park...maybe an error sign?

Nope, you're correct.  There are three current state highways in Kansas with numbers over 300.

K-368 near Pomona State Park
K-360 near Winfield

[Finrod]

I never could figure out why Indiana SR 234 got its number in the west-central part of the state, until I learned that US 136 in Indiana used to be SR 34.

[stevashe]

Closest thing to "unusual" in Washington would be WA-410 I'd say, which just kept its number when US-410 was deleted. It would be numbered 16 in the grid, though that was already taken. This also explains the 16x numbered routes that branch off of it (Washington does state route auxiliaries by adding numbers to the end instead of the beginning). This pattern of numbering state route branches of US highways based on where it is in the state grid also extends to US 97 with the 15x routes (though there is also 970 and 971) and to US 395 with the 29x routes (again, there is a 397 as well, though it isn't really at the position of a theoretical WA-29 in that location anyway).

[TheGrassGuy]

Wisconsin doesn't have state route numbers over 200 unless they're branches of a two-digit route (310's a branch of 10, 241's a branch of 41, etc.).

You're forgetting WI-243, which was numbered to be the same as its Minnesota counterpart across the St. Croix.

WI-243, which is a glorified bridge over the St Croix River at Osceola. There's no 43 or 143 nearby.

Should have read the thread.

So basically like NJ and NY-440? NJ 440 is the only NJ state route in the 400s.

There's an NJ Route 413, though signage is a little sparse:


NJ 439:


NJ 495, the I-495 that wasn't really never-was isn't but might as well be:

NJ 413 connects with PA 413, NJ 439 connected with a now-decomissioned NY 439 that was on Staten Island, and NJ 495 was originally intended to be I-495 (in addition to NY 495 on the other side of the tunnel). Perfectly logical numbers.

[MNHighwayMan]

NJ 413 connects with PA 413, NJ 439 connected with a now-decomissioned NY 439 that was on Staten Island, and NJ 495 was originally intended to be I-495 (in addition to NY 495 on the other side of the tunnel). Perfectly logical numbers.

I mean, in context, those numbers are logical, but they are otherwise unusual. I was about to say the same thing about WI-243, but in context of the Wisconsin state system in general, it is a pretty weird/unusual number, even though it does have a logical explanation.

[Max Rockatansky]

AZ 143 really doesn't conform to any preexisting numbering convention in Arizona.  Come to think of it AZ 153 was really much of the same when it was still a state Highway.  AZ 504 was a oddball number but a continuation of a highway from New Mexico. 

[Scott5114]

OK-325 is an example of a route that has itself stayed the same, but gotten more unusually numbered over time. It started out numbered as a continuation of NM-325. Then New Mexico renumbered the route on the other side of the state line as NM-456. Whoops. It remained as the only Oklahoma state highway in the 3xx range until 2014, when Oklahoma assigned 351 and 364 to a couple of turnpikes in the Tulsa area, following up with 344 in 2018.

So now there's a route at the end of the Oklahoma panhandle that's numbered like a turnpike for no apparent reason unless you dig deep into road history. They could always make it OK-456 and start the cycle over again, I guess...

[Roadwarriors79]

AZ 347 always seemed to me like a random number. This old link has an explanation:

https://arizonaroads.com/arizona/az347.html

[Max Rockatansky]

AZ 347 always seemed to me like a random number. This old link has an explanation:

https://arizonaroads.com/arizona/az347.html

Completely forgot about AZ 238.  I kind of wonder if a lot of the more recent numbers had something of a random draw to them?   

[TheGrassGuy]

Chances are, if you encounter an unusually numbered state highway that runs close or intersects a state border, the road on the other side of the border likely has something to do with it.

[MNHighwayMan]

Chances are, if you encounter an unusually numbered state highway that runs close or intersects a state border, the road on the other side of the border likely has something to do with it.

No shit, Sherlock.