YAKIMA, Wash. — The driver of a semi tractor-trailer was killed when the truck went off an overpass in Yakima Tuesday morning.
The truck rolled off the overpass at State Route 12 and First Street, a 6 a.m. tweet from Washington State Patrol Trooper C. Thorson said.
No other vehicles were involved.
Ramps and streets in the area are closed to traffic.
The cause of the crash is under investigation.