XY Challenge

[formulanone]

August 12: Post the junction of a US highway with a 5 in the tens place and a US highway with a 7 in the tens place.

Once again, I am amazed that the first post is the route combination I thought no one would think of. I'll post it again: US73 and US159 south of Falls City, NE

I just wanted to pick one which I probably hadn't played for the previous round.

[flan]

Probably the only contribution to the US Highway section of this thread I can make:

US 53 and US 71 run concurrent for 0.35 miles south of the Canadian border in International Falls, MN.