Westbound Highway 39 has reopened to traffic after a two-hour closure caused by an overturned trailer hauling a construction excavator.
The incident occurred about 6 p.m. Thursday at Dorsey Drive, according to a CHP Grass Valley Twitter post. No one was injured, but extensive cleanup was required because of damage to the roadway.
The westbound lanes reopened about 8 p.m.
Eastbound lanes were not affected by the crash.