Highway 193 near Mt. Eaton Mine Road has closed in both directions due to trees and power lines being down, said the California Highway Patrol.
The CHP received a call at 5:41 p.m. about those things disrupting the roadway.
There are no injuries and lanes are expected to open in two hours. The CHP says "this is not a mudslide," just trees and power lines that have fallen.
The downed tree is expected to be cleared around midnight.