3-Digit US Routes that Travel Through States that the "Parent" Route Does Not

[Charles2]

Are there any other examples of this besides these:

231 & 331 in Florida (31 doesn't travel through Florida)
129 in Tennessee
278 in Arkansas (although since 278 was extended west of Tupelo, MS, in the late '90's, it's a Johnny come lately)
321 in Tennessee
311 in North Carolina
158 in North Carolina
220 in North Carolina, Virginia, and Maryland

Note: 163, 400, 412 and 425 don't count

[briantroutman]

I'm sure there are many more.

Just off the top of my head, what about US 202 in DE, PA, NJ, and CT?
And US 491 in NM and CO–and historically, it's predecessor (US 666) in CO and UT.

[NE2]

270 Kansas: only one that enters a state where the parent's number is an Interstate?

[Zeffy]

I'm sure there are many more.

Just off the top of my head, what about US 202 in DE, PA, NJ, and CT?
And US 491 in NM and CO–and historically, it's predecessor (US 666) in CO and UT.

Add US 206 to that for NJ.

[getemngo]

Might want to point out that US 101 doesn't count either!

301 in Delaware
310 in Montana and Wyoming - has no states in common with US 10!
119 in Kentucky
219 in New York and Maryland
218 in Minnesota
221 in Florida and Georgia
421 in Tennessee, Virginia, Kentucky, and Indiana
222 in Maryland
522 in Maryland and Virginia
127 in Michigan
136 in Nebraska and Iowa
150 in Kentucky
151 in Iowa
160 in Colorado and Kansas
167 in Louisiana
275 in Missouri
180 in Arizona and New Mexico
191 in Montana, Wyoming, and Arizona

And I'll bet we're still missing a dozen.

[DTComposer]

395 in Washington

[national highway 1]

https://www.aaroads.com/forum/index.php?topic=3416.0
US 385 in Nebraska and Oklahoma
US 550 in New Mexico
US 830 in Washington

[Takumi]

178 in North Carolina

[Alex4897]

US 301 in Delaware.

[Roadsguy]

In Pennsylvania:

• 202
• 209
• 224

[thenetwork]

US 127 in Michigan, thanks to M-DOT!!!

[agentsteel53]

Delaware US 122

[cpzilliacus]

522 in Maryland and Virginia

522 in West Virginia.

[1995hoo]

340 in Virginia.

[cpzilliacus]

340 in Virginia.

Twice!

[bassoon1986]

271 in Oklahoma
380 in New Mexico (since the 90's)

[NE2]

522 in Maryland and Virginia

522 in West Virginia.

Failure.

[1995hoo]

340 in Virginia.

Twice!

Which then raises the question of whether that ever happens anywhere else (i.e., a 3-digit US route twice enters a state its "parent" route does not). I'm too lazy to correlate all the references in this thread on a map.

[hbelkins]

US 258 in North Carolina.

Which then raises the question of whether that ever happens anywhere else (i.e., a 3-digit US route twice enters a state its "parent" route does not). I'm too lazy to correlate all the references in this thread on a map.

US 119 in Kentucky. Besides its run from Pineville to South Williamson, there are those two brief instances where it is co-signed with US 52 and crosses into Kentucky.

421 in Tennessee, Virginia, Kentucky, and Indiana

Nope, US 21's current northern terminus is Wytheville, Va.

220 in North Carolina, Virginia, and Maryland

And West Virginia.

[NWI_Irish96]

US 421 travels through Indiana, Kentucky and Tennessee but US 21 does not enter any of those states.

Back before I-64 was completed, there was a US 460 in Indiana without US 60.

If you also want to consider interstates, I-275 travels through Indiana but I-75 does not.

[jdb1234]

US 123 in South Carolina
US 441 in North Carolina

[Mapmikey]

340 in Virginia.

Twice!

Which then raises the question of whether that ever happens anywhere else (i.e., a 3-digit US route twice enters a state its "parent" route does not). I'm too lazy to correlate all the references in this thread on a map.

US 212 in Wyoming
US 119 in Kentucky

Mapmikey

[getemngo]

340 in Virginia.

Twice!

Which then raises the question of whether that ever happens anywhere else (i.e., a 3-digit US route twice enters a state its "parent" route does not). I'm too lazy to correlate all the references in this thread on a map.

Would you also count a route that enters two non-contiguous states that its parent doesn't, with one or more states in between that its parent does enter?

For example, US 136 from east to west is in Indiana (36 yes), Illinois (36 yes), Iowa (36 no), Missouri (36 yes), and Nebraska (36 no). I'd consider this the same type of deal, because there are two distinct segments that fit the criteria... they just happen to be in different states.

[vdeane]

I would wager that more 3dus routes enter states their parents don't than not.  It's one of the reasons I'm not very fond of the US route system.  If you're going to make the number essentially random, then don't try to claim there's a system.  I wouldn't be suprised if there are 3dus routes that are longer than their parents.

[NE2]

I wouldn't be suprised if there are 3dus routes that are longer than their parents.

US 191. But are there any that are not because of removal from Interstates? 395 may have qualified at one time.