Highway 58 is closed in both directions in San Luis Obispo County after a big rig carrying cardboard overturned.
California Highway Patrol in Templeton says eastbound Highway 58 is shut down at Navajo Quarry, and westbound lanes are closed at Navajo Creek.
Drivers should expect the roadway to remain closed for about five hours while crews clear the crash. Motorists should avoid the area and use alternate routes.
