57-year-old Daniel Williams of Patten was killed when his dump truck crossed the center line on Route 9, then rolled several times.
Williams had been working with a road construction company doing hot topping on Route 9.
He was alone when the accident happened.
According to Trooper Barry Curtis, Willaims had just finished his last load of hot top, and was headed home for the day when the accident occured.
Williams was reportedly alive when emergency crews first found him, but died before they could remove him from the truck.