Route 1 is closed at Maplewood Lane in Madison after a car struck a utility pole, police said.
It happened around 2:30 p.m. Saturday. It's not clear whether anyone was injured.
Connecticut Light & Power crews are the scene working to repair the pole. As of midnight on Saturday police and power crews were still on scene and Route 1 was still closed.
Traffic is being detoured onto Stony Lane, Fort Path Road and Mungertown Road.
Check back for updates.