All northbound lanesof the 5 Freeway north of Burbank were closed Wednesday afternoon after flooding sent mud and debris across the interstate.
Flooding also closed all but one southboundlane, backing up traffic into Sun Valley, according to the Los Angeles Times.
The California Highway Patrol closed the northbound lanes about 2:30 p.m. as authorities diverted traffic at Glenoaks Boulevard.
Several southbound lanes were also closed at Roscoe Boulevard, according to the CHP, which requested bulldozers and other equipment from Caltrans to clear the roadway.
Burbank police warned commuters that traffic could spill into the northeast area of Burbank.
“My suggestion would be to stay at work,” said Burbank Police Sgt. Darin Ryburn. “We will have some residual traffic.”
Aerial television news footage showed flooding, rocks, mud and debris across several lanes. Several vehicles were also stalled in the water, the CHP said.
There was no immediate estimate when the lanes would reopen.
The debris flow comes as the season's first main storm system blows across the region, bringing scattered showers. The storm is expected to move out starting Thursday.
--Jason Wells, Los Angeles Times
Alene Tchekmedyian contributed to this story.