MOSES LAKE - A semi hauling a flatbed trailer loaded with metal roofing material blocked a lane of traffic on westbound Interstate 90 at milepost 181, roughly two miles east of Moses Lake, after it rolled onto its side Monday morning.

There were no other vehicles involved and no serious injuries, according to the Washington State Patrol.

Traffic moved around the vehicle slowly, and a tow truck was on the way. Due to the extent of the spill, cleanup was expected to take some time, the state patrol stated. The cause of the accident is under investigation.