A semi-truck rests on its side as Oklahoma Highway Patrol troopers investigate the cause of the accident 1.5 miles south of Bison on U.S. 81 early Thursday, June 12, 2014. OHP closed a section of the highway and then reopened the inside southbound lane after the driver of the truck was transported to a local hospital. (Staff Photo by BONNIE VCULEK)

Overturned SemiOklahoma Highway PatrolBisonBonnie VculekEnid