Caltrans Video Shows a Giant Boulder Bounce Down a Hillside Onto Highway 18

Highway 18 is closed from 9 a.m. to 3 p.m. Monday through Thursday for a rock scaling project.

A boulder is removed from a hillside off Highway 18 in the San Bernardino Mountains

A Caltrans video shows what goes into rock scaling operations that prevent dangerous rockfalls on Southern California’s mountain roads.

The slow-motion video shows a giant boulder bouncing down a hillside during a Caltrans project on Highway 18, the main route into the San Bernardino Mountains. The road is closed as part of the ongoing rock scaling operation.

Highway 18 is closed in both directions from Snow Valley to Big Bear Dam from 9 a.m. to 3 p.m. Monday through Thursday. 

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