UPDATE: October 1 at 8:30 p.m.
WSP said the truck was traveling southbound and slowed for traffic ahead when the trailer wheels veered onto the soft shoulder, leading to the rollover.
The vehicle came to rest partially blocking the right lane.
According to WSP, the 74-year-old driver was injured but was not transported to the hospital.
The cause of the rollover is currently under investigation, with charges pending the outcome.
There were no drugs or alcohol involved in the incident.
RITZVILLE, Wash. — A semi-truck rollover is causing traffic delays on U.S. Highway 395 near Ritzville.
According to the Washington State Patrol (WSP), troopers are on the scene of a semi-truck rollover crash about four miles south of Ritzville.
WSP reported that no one was injured and the road is parti