| State: | CT |
| Type: | CT |
| Route: | 135 |
| Map Custom: | yes |
| Map Notes: | Map of Fairfield County in southwestern Connecticut with Route 135 highlighted in red |
| Length Mi: | 2.58 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Established: | by 1953 |
| Direction A: | South |
| Terminus A: | in Fairfield |
| Direction B: | North |
| Terminus B: | in Fairfield |
| Counties: | Fairfield |
| Previous Type: | CT |
| Previous Route: | 133 |
| Next Type: | CT |
| Next Route: | 136 |
Route 135 is a Connecticut state highway running entirely in the town of Fairfield. It connects U.S. Route 1 in downtown Fairfield to Route 58 in the northern part of town.
Route 135 begins as North Benson Road at an intersection with U.S. Route 1 in downtown Fairfield and heads north, intersecting I-95 at southbound Exit 22 about 0.2miles later. Route 135 continues north, passing by Fairfield University, then turns right onto Stillson Road. It then heads northeast for another 0.6miles until it ends at an intersection with Route 58.[1] Route 135 is two lanes wide and is classified as a minor arterial road for its entire length. It carries traffic volumes of about 14,600 per day.
The first Connecticut road signed as 135 was State Highway 135, a road connecting New Haven and North Branford designated as such during the 1920s.[2] This route followed a section of contemporary Route 80.
In 1932, Route 135 was created as a 9.07miles road connecting Southbury to Middlebury. This route was abolished in 1943, and it was absorbed into contemporary Route 188.
The current iteration of Route 135 was created in 1953.
Near its southern terminus at U.S. Route 1, a Metro-North bridge carrying the New Haven Line runs over the route. In 2001, as part of a plan to replace the bridge, the Connecticut Department of Transportation proposed widening Route 135 to four lanes. Due to concerns about the induced demand a widened road may attract, local officials ultimately scrapped widening plans for the road.