Route 199 is a rural state highway in western Connecticut, running from Roxbury to Washington.

It heads north along North Street towards the town of Washington, crossing Battle Swamp Brook along the way.

In Washington, the road name changes to Roxbury Road and the route continues north to end at an intersection with Route 47 in Washington center.

In the 1932 state highway renumbering, old Highway 196 was renumbered to Route 131 with an additional southern extension along South Street to the village of Roxbury Falls.

The former section was turned over to the towns of Roxbury and Bridgewater.