North Broad Street, Route 15 and Interstate 691 West are closed after a car rollover in the area of 1722 North Broad Street.
Wires are down on North Broad Street and the road is closed on both sides.
The northbound closure is in the area of the I-91 and Route 15 merger and the southbound closure is at North Colony Road State.
The crash was reported at 4:07 p.m. and police said the driver veered to avoid a collision, according to police.
Connecticut Light & Power is heading to the scene.
No information was immediately available on whether there are injuries.