I-96 isn't the only "interstate" that never leaves its own state. Here are the others. I-H1, H2, and H3 via Google Maps I-H1, H2, and H3 Hawaii's I-H1, I-H2 and I-H3 aren't going to be connecting another states.
The numbers on east-west roads get larger as you go from north to south, and the numbers on north-south highways increase as you go from east to west across the state. Now That's Interesting I-90 is the longest U.S. interstate, stretching all the way from Boston to Seattle and ...