In the 1920s, State Highway 139 followed today's Route 101 between Route 12 and Rhode Island.

The modern Route 139 was created in 1932, and was not always as short as it is now. The original route extended 8.03 miles, from US 1 to Route 15 (now Route 17) in North Branford.

In 1951, the state created Route 22 from three existing routes to help guide drivers from the new Wilbur Cross Parkway to US 1. Route 22 absorbed most of Route 139, leaving the 2-mile segment we see today.

• "Route marks planned on links to parkways." Bridgeport Sunday Post, April 22, 1951.

Route 139 Ends (Photos; Doug Kerr at state-ends.com)