Police and firefighters responded to a call of a wire that fell from a utility pole at the corner of Shelton Road and Moose Hill Road at 10:40 a.m.
David York, a Stevenson firefighter, said it is a main wire.
The wire is smoking on the road and occasionally shoots flames.
police are detouring traffic on Route 110 at Tannery Road and at the traffic circle at Route 111.
A town highway department truck is also helping with traffic.