Three people were critically injured in an incident on Highway 20 west of Grass Valley on Thursday afternoon, with one being flown, according to the California Highway Patrol.
The incident occurred around 3:30 p.m. near Rex Reservoir Road, when an eastbound vehicle crossed the double yellow lines for unexplained reasons and collided head-on with an approaching vehicle, according to CHP.
The drivers of both vehicles, as well as the single passenger in the impacted vehicle, were sent to hospitals with serious injuries. One of the drivers was transported to a hospital in Placer County.
LiveCopter 3 is on the scene and shows crews shutting westbound lanes as they work to clear the incident site. Traffic is backed up on the freeway.
Drivers should expect delays in the region and consider other routes.
Reference: Crash shuts down part of Highway 20 in Nevada County, multiple people injured, officials say