Cities that have lost interstates

[roadman65]

North Bergen, Union City, and Weehawken, NJ, were served by Interstate 495, since demoted to NJ 495.

Could not have said that one any better.

[Henry]

At least 2 locations had their 2di's "demoted" to 3di's.

• Tampa, FL: I-75 -> I-275 (when I-75 was rerouted inland)
• Rockville, MD: I-70s -> I-270 (when they did away with the N and S suffixes)

Supposedly, the reason that I-95 was never routed down the NJ Turnpike and across the Delaware Memorial Bridge is because Philadelphia did not want their section demoted to 3di status. Which is understandable, given I-95's position commercially.

I forgot: Arlington, VA also lost I-95 when it was rerouted around the Capital Beltway. Of course, that is now I-395.