AMP: 105 Location: Poquonnock Rd and Newtown Rd, Poquonock Bridge, Groton A mile after SR 649, we’ll approach CT 117. AMP: 105 Location: Poquonock Rd and Newtown Rd, Poquonock Bridge, Groton Follow CT 117 north to I-95. AMP: 105 Location: Poquonnock Rd and Newtown Rd, Poquonock Bridge, Groton Turn left for 117 north to Ledyard. … Continue reading U.S. Route 1, SR 649 to CT 117