AMP: 80 Location: Boston Post Rd and Main St, Old Saybrook Reassurance shield as CT 154 joins US 1. AMP: 80 Location: Boston Post Rd and Middlesex Tpk, Old Saybrook As we head out of downtown Old Saybrook, turn right ahead for US 1 north to I-95 north. Keep left for CT 154 north to … Continue reading U.S. Route 1, CT 154 to CT 154