(KLZA)-- A semi-truck driver suffered serious injuries in a single-vehicle wreck Tuesday afternoon in Atchison County, Missouri. 

The Missouri Highway Patrol says 29-year-old Andrew Williams, of Excello, Missouri, was southbound on Route B about 3 1/2 miles east of Watson when his rig went off the west side of the road, overturned and lost its cargo.  

Williams was transported by air ambulance to a Lincoln, Nebraska medical facility. 

The Patrol says he was wearing a seatbelt.

The wreck was reported around 3:00.