U.S. Route 1, NH 1A to NH 1B

AMP: N/A

Location: Middle St and State St, Portsmouth

A few blocks after Route 1A rejoins, turn right onto State Street to stay on 1 north. Follow 1 north up to Route 1B, which also approaches 1 at an unsigned junction.

N to ME State Line, S to NH 33

S to NH 1A

S to NH 1B