Route 176 is a state highway in central Connecticut, running from the Berlin Turnpike in southern Newington to the Newington–Hartford town line.

It heads north, intersecting with the eastern end of Route 174 and the western end of Route 287 as it proceeds towards the town center.

After about a mile, Route 176 turns northeast to follow Hartford Avenue.

It ends after another mile at the Hartford town line.

The original route continued along Main Street and South Street instead of using Hartford Avenue, which at the time was part of Route 175.