Wyoming 230 (and other routes split by a neighboring state)

[Chris]

I noticed Wyoming Route 230 in the Rand McNally atlas... It runs from Laramie to near Riverside, but it dips into Colorado as Colorado Routes 127 and 125 before it continues as WY 230 in Wyoming again. Does it happens a lot that the same road number is split up by passing through another state?

I will show it on this map:

[agentsteel53]

NY 17 (soon to be I 86) dips into Pennsylvania for a very short while, and the stretch is maintained by New York.  There is an exit in PA (for US-220), implying the presence of NY 17 shields on Pennsylvania soil. 

Arizona state route 95 is implied to go through Needles, California.  In Needles, it comes across the Colorado River and is signed northbound as "to AZ 95" with ADOT-provided signs.  The route southbound is then down to I-40 (and US-95!) and back across the border at Topock, and splitting off I 40 at exit 9.

The older alignment (splits off I-40 northbound at Topock, taking the old US 66 routing, then County Route 1) is intermittently signed as 95 as well, but I believe the road was returned to tribal control, leaving only "through Needles" as the possible routing.

[agentsteel53]

oh and for a US route ... US 395 goes California-Nevada-California.

[Chris]

US 54 goes Texas-New Mexico-Texas, but I guess state routes are more rare to have something like that.

[njroadhorse]

I-24 goes Tennessee, Georgia, Tennessee

[Chris]

I also believe I-86 dips into Pennsylvania for a short section near Waverly, but that's for like a few hundred feet.

edit:

I-684 also runs New York - Connecticut - New York for a minor distance.

[corco]

This happens on several other occasions in Wyoming too

WYO 89 goes into Utah near Cokeville WY/Randolph UT, connected by Utah SR-16 and SR-30

US-212 enters Wyoming from South Dakota, passes into Montana, and then enters Wyoming again on the other side of the state

WYO 70 dips into Colorado but keeps its designation as Wyoming 70 even in Colorado

US 191 also leaves Wyoming, enters Montana, and then briefly re-enters Wyoming in Yellowstone

Notably, there are no WYO 89 or WYO 230 trailblazers in their Utah/Colorado segments

[cu2010]

PA426 in northwestern Pennsylvania is also split into two sections by New York, with the NY section being signed as NY426.

[Chris]

I guess it's not so weird for Interstate and US Highways to have something like this, becuase they form a nationwide numbering system, and their main purpose is to connect states and cross state lines.

The list of State Highways to have this feature should be pretty short I think. Maybe mostly in states with a different shape than a rectangular form.

[Bryant5493]

Georgia State Route 94 and Florida State Route 2.


Be well,

Bryant

[Chris]

US 50 runs through Maryland twice, in the far west panhandle, then through Virginia + D.C. and then from Washington to Ocean City in Maryland again. 

edit:

US 340 runs from Virginia into West Virginia and enters Virginia briefly again before entering Maryland.

edit 2:

US 460 runs Virginia - West Virginia - Virginia in the Princeton, WV area.

Why do I know such things? 

[florida]

Georgia State Route 94 and Florida State Route 2.


Be well,

Bryant

Exactly what I was gonna say 

[agentsteel53]

in somewhat related, yet more absurd, numbering schemes ... Nevada 266 enters California and becomes CA-266 ... wait, no, it becomes CA-168, which then turns into CA-266 about 5 miles later, and then CA-266 returns to Nevada to become NV-264. 

[ctsignguy]

I also believe I-86 dips into Pennsylvania for a short section near Waverly, but that's for like a few hundred feet.

edit:

I-684 also runs New York - Connecticut - New York for a minor distance.

Don't forget NY 120A that is on the same general neighborhood...it runs a short distance in Connecticut, but NYDOT is responsible for maintenance and upkeep

[74/171FAN]

VA 259 starts in VA and goes into WV for a while before ending at US 50 in VA.  There are many others as well including VA 311.

[Scott5114]

The famous OK-20/AR-43 concurrency wholly enters Oklahoma for a bit before returning to the state line.

I believe there is a situation where an NC route and a GA route do this.

There is a situation where a county road from Iowa enters Missouri, becomes Route V, then re-enters Iowa. Route V connects to no other Missouri state highway (and if I'm remembering right, possibly has no outlet to the rest of the MO highway system without going back into IA).

[jdb1234]

GA Hwy 246 crosses the GA/NC state several times before staying in NC

[dislocatedkid]

What about MN-23 which enters Wisconsin for a couple tenths of a mile after crossing the St Louis River south of Duluth. Yet it is maintained Minnesota DOT.

[agentsteel53]

US 54 goes Texas-New Mexico-Texas, but I guess state routes are more rare to have something like that.

US-62 and US-180 do the same thing.  In fact, all three go through El Paso (as did US-70, when it followed US-54's route).  54 and 62 end there, and 180 continues back into New Mexico, thereby alternating TX-NM-TX-NM.

US-2 also alternates two states twice: MI-WI-MI-WI.  If it were routed down 8 and up 141 in the Norway area, it would do so a third time.  Instead, US-141 by itself does it as well.

US-12 used to do this: MT-WY-MT-WY, between 1939 and 1956 or so.  Nowadays, it is US-212 that does this.  It is Beartooth Highway heading into Yellowstone.

US-52 goes WV-KY-WV-KY ... and then WV again! 

[Alex]

Maryland 54 straddles the state line with Delaware, becomes Delaware 54, then exits as Maryland 54

[leifvanderwall]

SC-GA-FL 121 could make a good case ,but here's where it gets interesting: when GA 23 muliplexes w/ 121 from Folkston to the Fl/Ga line. One would ask why is GA 23 with 121 when it could've ended at US 1/23 north of Folkston? I think FL 121 was supposed to be FL 23 , but it was too close to US 23. So the Peach State decided to multiplex GA 23/121 to tell their Sunshine State counterparts "We don't follow your route designation scheme." There is actually a CR 23 A branch off of FL 121 at the I-10 jct. to prove FL 121 was supposed to be SR 23, eventhough FL did put a new SR 23 route in Duval-Clay Counties from FL 134 to FL 21. 23/121 is proof that there is animosity between Georgia & Florida and maybe that's why they play their annual college football game in Jacksonville. I also found this interesting: GA 23 runs exactly parallel to GA 121 from Folkston and muliplexes with it again from Reidsville to Metter and for the last time in Millen. Oh, and if that weren't enough I think it's the first time a state road with the same number multiplexes with its exact twin US Hwy. at Folkston with GA 23 & US 23.

Some more severe geekiness on my part: Territorial Rd. in Hillsdale County , just south of Waldron, goes right on the Michigan-Ohio State Line ; half of the road had Ohio street signs and the other half had Michigan signs. Then Territorial Rd. turns into Morenci Rd in Lenawee County and Morenci in turn is converted to Ohio 120 when it fully crosses the state line for good. By the way, Indiana 120 is actually converted into Hillsdale Co's Territorial Rd. ; so you have one route that is shared by three different states, but it is not a state designated hwy. in Michigan.

[hbelkins]

KY 87 disappears into Tennessee for a short distance and re-emerges.

WV 46 disappears into Maryland for a short distance and re-emerges, as well.

[florida]

I think FL 121 was supposed to be FL 23

It was originally SR 23. SR 121 used to be three separately numbered roads, but that's for another thread. 

[Roadgeek Adam]

I see its apparent we missed NJ 440, which wouldn't be true if they didn't decommission NJ 169, but now NJ 440 ends at the border in both directions with County Route 501

[leifvanderwall]

But you must agree Florida, there is some animosity between the Sunshine State and Georgia. It seems the Peach State was making fun of Florida putting 23/121 together from Folkston. Why did Florida change SR 23? Because of US 23?