AMP: 2 Location: Depot Hill Rd and King St, Enfield No signage as SR 510 begins. 510 serves as a business loop of sorts for US 5 into downtown East Windsor.1 AMP: 1 Location: Main St and Pleasant St, East Windsor A mile later, we’ll enter East Windsor. AMP: 1 Location: Main St and Bridge … Continue reading Connecticut State Road 510, US-5 to CT 140