Route 3 serves as a local alternative to Interstate 95 (I-95) as it parallels I-95 for almost its entire length.

Route 3 continues north, intersects I-95 at exit 1, and turns to the northeast to parallel I-95.

The New London Turnpike proved a viable alternative to the Old Post Road, which followed the coastal route, as it was more direct and faster.

The New London Turnpike (also called New London Avenue in parts of Rhode Island and the Gold Star Highway in Connecticut) was a primary route until the advent of automobiles in the early 20th century.

The increased need for roadways led to the development of a more improved interstate highway system.

In fact, in 1947, Connecticut proposed moving US 1 to this route, but RIDOT declined, wanting US 1 to continue through the shore towns.

This access was brought back in 1969 when the freeway extension was built to the south.