AMP: 109 Location: W Main St and Water St, Mystic, Groton Just after CT 215, we’ll pass over a drawbridge into Stonington. AMP: 109 Location: E Main St and Broadway Ave, Mystic, Stonington As we cross into the Stonington side of Mystic, turn right to stay on US 1 towards Stonington center and Westerly, R.I. … Continue reading U.S. Route 1, CT 215 to CT 27