An active landslide again closed the Pacific Coast Highway between Topanga Canyon and Las Flores canyons Monday, a Caltrans official said.
Two hilltop houses are threatening to fall onto the highway. The deck of one of the homes was removed before it tumbled down the hill, said Caltrans spokeswoman Margie Tiritilli.
The slide occurred at the same spot where Caltrans built a 12-foot-high, 500-foot earth berm over the weekend to combat a Friday morning landslide that blocked the road until midnight Sunday.
Officials estimate that as much as 500,000 cubic yards of dirt and debris is still poised to fall on the coastal highway.
Motorists should use alternative routes such as Topanga Canyon, Malibu Canyon, Kanan-Dume Road or the San Diego Freeway, she said.
Updated information on the slide is available at (310) 456-9982.