The Hammonasset Connector is a 1.35-mile-long (2.17 km) freeway from Interstate 95 (I-95) to U.S. Route 1 (US 1).

The Hammonasset Connector begins as a continuation of Duck Hole Road at exit 62 on I-95 in the town of Madison.

The connector starts as a continuation of Duck Hole Road at an interchange with I-95 in Madison.

[2] The Hammonasset Connector was built in 1957, serving as a freeway from I-95 to the park in Madison.

[3] The Connecticut Department of Transportation (CDOT) had once planned to turn the southern terminus of the connector into an interchange, where ramps would be given for US 1 and the connector's internal designation, 450, would continue in the park.