Interstates or US Highways that go A-B-A in terms of states traveled

[Declan127]

I-495 (by signage) goes (starting and ending at the Springfield Interchange, as that's where the 95 multiplex starts and it was the terminus when 95 was first routed onto the Beltway) VA-DC-MD-VA.

[Henry]

There's also I-275 around Cincinnati, which goes from OH to KY to IN and back to OH again.