Maine State Police Trooper Jason Wing, left center, and Trooper Tim Turner of the Commercial Motor Vehicle Enforcement Division examine the underside of a 22-wheel tractor-trailer that flipped on its side late Friday morning on Route 120 in Roxbury. Watching at left are Roxbury fire Chief Ray Carver and Nichols Brothers Inc. chip truck driver Jason Dyke of Rumford, who wasn’t injured.

ROXBURY — A Rumford man escaped injury late Friday morning after the tractor-trailer he was driving east on Route 120 flipped on its side, spilling an estimated 80,000 pounds of wood chips, Oxford County Sheriff’s Sgt. Timothy Holland said at the scene.

Jason Dyke, 30, suffered bumps and bruises in the 11:38 a.m. accident that caused more than an estimated $50,000 damage to the chip truck owned by Nichols Brothers Inc. of Rumford, Holland said.

“Speed was definitely not a factor,” Holland said. “Right now, it looks like there were possibly defects in the trailer. It looks like its structural integrity let go.”

Holland said a crew from Steve Swasey Excavation in Andover was cleaning up the spilled load, which was bound for Stratton. MT Pockets of Dixfield pulled the rig back onto its wheels. Responders included Roxbury and Andover firefighters, Andover Rescue, Med-Care Ambulance, and Troopers Jason Wing and Timothy Turner of the Maine State Police Commercial Motor Vehicles Enforcement Division.

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Traffic on Route 120 between Andover and Roxbury was limited to one lane into Friday evening after a tractor-trailer driven by Jason Dyke, 30, of Rumford rolled over at about 11:38 a.m., spilling its estimated load of 80,000 pounds of wood chips in Roxbury, Oxford County Sheriff’s Sgt. Timothy Holland said at the scene. Investigators believe the trailer fell apart, spilling the load and flipping both trailer and the 2010 Peterbilt tractor.