Route 135 is a Connecticut state highway running entirely in the town of Fairfield.

Route 135 continues north, passing by Fairfield University, then turns right onto Stillson Road.

[1] Route 135 is two lanes wide and is classified as a minor arterial road for its entire length.

[2] Near its southern terminus at US 1, a Metro-North bridge carrying the New Haven Line runs over the route.

[2] In 2001, as part of a plan to replace the bridge, the Connecticut Department of Transportation proposed widening Route 135 to four lanes.