Roads that enter one county twice

[PHLBOS]

I'm surprised it hadn't been mentioned yet, I-195 in New Jersey goes Mercer-Monmouth-Ocean-Monmouth.

The upper-end of the AC Expressway, between NJ 42/168 & Exit 41 meanders in-and-out of Camden & Gloucester Counties.  While heading down to the Jersey Shore, I do recall seeing a couple of Entering Gloucester & Camden County signs along the way.

[KEVIN_224]

I-691 heading west from I-91 in Meriden, CT:

Meriden (New Haven County)
Southington (Hartford County)
Cheshire (New Haven County)

I-691 West ends at I-84 at the Cheshire/Southington town line. Get onto I-84 East here and you'll be in Hartford County again.