After crossing the town line, it ends after 0.2 miles (0.32 km) at an intersection with U.S. Route 44 in the southwest corner of North Canaan.

[1] The Huntsville to Falls Village section of modern Route 126 was originally the eastern half of the Salisbury and Canaan Turnpike, a private toll road that was chartered in October 1801.

The turnpike ran along modern Route 126 from Route 63 to Falls Village, then it crossed the Housatonic River via Water Street and proceeded west through the town of Salisbury along Falls Mountain Road and Farnum Road (part of the alignment has been abandoned) into the village of Lakeville.

This portion of Route 126 was also incorporated in the first state highway system established in 1922.

The Huntsville to Falls Village section became the north end of State Highway 132 in the 1920s.