AMP: 0 Location: London Rd and North St, Hebron No signage as SR 603 begins. AMP: 1 Location: Boston Hill Rd and East St, Andover A mile later, we’ll enter Andover. AMP: 3 Location: Boston Hill Rd and Hebron Rd, Andover Two miles later, we’ll come to an unmarked junction with CT 316 in Andover. … Continue reading Connecticut State Road 603, CT 85 to CT 316