US 51 on the Tollway? And trip impressions.

[NE2]

If I recall, there is a rule that once you mark a U.S. route on a freeway you cannot demote it.

Maybe now, but it was common in the old days to move a U.S. Route onto an Interstate and then back (two examples are US 40 in Ohio and US 1 in eastern Connecticut). And recently AASHTO reluctantly allowed North Carolina to move US 117 from I-795 back to the old route (which was briefly US 117 Alternate).

[Alps]

If I recall, there is a rule that once you mark a U.S. route on a freeway you cannot demote it.

Maybe now, but it was common in the old days to move a U.S. Route onto an Interstate and then back (two examples are US 40 in Ohio and US 1 in eastern Connecticut). And recently AASHTO reluctantly allowed North Carolina to move US 117 from I-795 back to the old route (which was briefly US 117 Alternate).

They did capitulate on that one? I was under the impression AASHTO just gave up trying to pressure NC but never officially moved it back.

[NE2]

They did capitulate on that one? I was under the impression AASHTO just gave up trying to pressure NC but never officially moved it back.

I think you're right - the last submission was fall 2008, and AASHTO "Disapproved because information submitted appeared to be conflicting and inconsistent". Here's where NCDOT moved it back: http://www.ncdot.org/doh/preconstruct/traffic/safety/programs/data/route_changes/i795_20090422.pdf