Just after 4am Walker County Sheriff’s Office received a call that an 18-wheeler, loaded with watermelons was southbound on I-45 near Park Road 40. The driver reported his tires caught fire and was spreading to the truck and cab. New Waverly Fire was dispatched along with additional manpower and a tanker from Huntsville. Units arrived on location with the truck fully involved in fire. As of 9:30 am crews on the scene continue the cleanup. Traffic is flowing normal through the area.