A semi-trailer rig rolled late Monday morning on Highway 191 in Grand County, closing lanes in both directions into the early afternoon.
Utah Highway Patrol Cpl. Todd Johnson said the driver told investigators he had swerved to miss hitting an antelope crossing the road.
The truck veered off the highway, but the weight of the trailer's cargo shifted, causing the truck to tip over. The truck then got hung up on the rails of a railroad crossing bridge, Johnson said.