3dus that enter in a state w/out their parent

[Michael in Philly]

Okay, I'll take a stab at a few states I know fairly well:

Pennsylvania - 202, 209, the former 309 (now Pa. 309), 224.
New Jersey - 202, 206.
Delaware - 202 again.
Maryland - 219, 220.

While we're at it, is there a state other than Rhode Island (D.C., Alaska, Hawaii don't count) that has no 3dus?

[corco]

Washington- 730, 195, 395
Wyoming- 191, 212, 310
Idaho- none

Idaho is very close on having no 3duses- it just has that quarter mile stretch of US-195

[LeftyJR]

Obviously US 220 which with the exception of Pennsylvania and New York is never in a state with its parent as it extends all the way to North Carolina for some reason

But it DID touch US-120 in Lock Haven until it was decommissioned...but then again, I don't think US 120 ever made it to US 20 did it?

[jdb1234]

US 123 enters South Carolina, US 23 does not.

[dave19]

But it DID touch US-120 in Lock Haven until it was decommissioned...but then again, I don't think US 120 ever made it to US 20 did it?

[/quote]

Early in its history and for only a short time, US 120 ran from Erie to Philadelphia (so it did touch US 20).

[US71]

US 275 in Missouri

Does US 412 count or US 425 ?

[national highway 1]

I'd doubt it, since they are illegitimate routes

[Roadgeek Adam]

Old U.S. Route 611 technically entered Jersey for a time. 11 never did.

[agentsteel53]

US-666 made it to Colorado and Utah.  Now, US-491 makes it to New Mexico.

[TheStranger]

US-666 made it to Colorado and Utah.  Now, US-491 makes it to New Mexico.

US 466 in that vein made a stop in Nevada on its way from Barstow to Kingman - a state US 66 never entered.