Police said the 47-year-old from Haverhill was driving westbound on the Post Road around 3:45 a.m. when he failed to veer to the right to enter the traffic circle, instead heading straight into eastbound lanes.
He struck a utility pole between Circle Diner and Fairfield Wines & Spirits. He did not have his headlights on, police said.
The man sustained non-life threatening injuries and was transported to Bridgeport Hospital.
The case is under investigation and the man may face charges.
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