Map
The Greater New Haven area is bisected by two Interstates, I-95 (which runs along the coast) and I-91 (which heads due north into Massachusetts).
From Hartford CT, Springfield MA and points north, take I - 91 South, which will lead you into New Haven.
From Rhode Island, Eastern Connecticut, and Eastern Massachusetts, take I-95 South along the coast.
From New York City and points south and west, take I-95 north along the coast.
