On Friday, the storied coastal road had dissolved into a river of mud and debris after a powerful rainstorm sent those burned hillsides careening toward the ocean, turning canyons into rivers of mud and rocks.

Flooding, mudslides and debris flows caused by the heaviest rain in Los Angeles and southern California in a year shut Pacific Coast Highway from approximately Santa Monica to the Malibu Pier.

PCH's closure has severely disrupted local transportation networks and emergency response capabilities across Los Angeles County.

California remains in the grip of an unrelenting atmospheric river delivering record-breaking rainfall, heavy mountain snow and destructive winds. Since the weekend, the storm has triggered widespread flooding,

As heavy rain from a large storm subsided, officials in Southern California said rock and mudslides remain a threat.

Southern California faces the continued risk of rock and mudslides on wildfire-scarred hillsides Friday, a day after heavy rains sent debris across several roadways, including