CHP: Interstate 80 closed; traffic detoured through Grass Valley, Nevada City | TheUnion.com
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CHP: Interstate 80 closed; traffic detoured through Grass Valley, Nevada City

The California Highway Patrol at Truckee reports the closure of westbound Interstate 80 at the Highway 20 exit, due to excavation work on a mudslide area.

All traffic is being detoured down Highway 20 through Nevada City, Grass Valley and Auburn before returning to the interstate.

The CHP expects western Nevada County to see a substantial increase in traffic.