Expect traffic trouble on Pacific Coast Highway for much of Tuesday.
The undercrossing will connect Corral Beach to the other side of PCH near Malibu Seafood.
"Our geologists anticipate more material and boulders to come down at this location," Caltrans said.
Travel continues to be impacted Tuesday by landslides on Pacific Coast Highway and Topanga Canyon Boulevard.
A landslide shut down a portion of Pacific Coast Highway in Malibu Monday morning.
The canyon road was shut down over the rainy weekend as a precautionary measure following mudslides last month.
After a mudslide recently shut down Malibu Canyon Road for days, officials are getting ahead of the storm this time around.
Northbound Pacific Coast Highway lanes were shut down in Malibu Wednesday morning after a rockslide.
Storm-related erosion, now repaired, led officials to close a six-mile stretch of PCH each night for much of February.
Crews worked for several days to clear 500 cubic yards of mud, rock and debris that blocked Malibu Canyon Road.
Crews are working to clear mudslides that have hampered travel in and around Malibu this week.
A large mudslide completely blocked Malibu Canyon Road and another mudslide shut down PCH Wednesday morning.
A six-mile section of Pacific Coast Highway will be closed nightly as crews work to repair a portion of the road that fell into the ocean.
A new round of road blockages have made travel difficult on PCH Tuesday afternoon.
The reorientation of PCH lanes is part of an ongoing project to restore passageways for the endangered steelhead trout.
Work on the PCH traffic synchronization project will begin earlier in the day than previously announced.
Crews will work to perform upgrades on PCH that will allow all signals to be synchronized and managed in real time.
Changes in response to the PCH crash that killed four women last month have begun rolling out in Malibu.
Lane closures will be in effect on PCH on Saturday and Sunday for the Malibu Half Marathon and 5K.
A man died after his car plunged off a Malibu Canyon Road cliff early Monday morning, authorities said.
Work on the PCH/Las Flores Canyon Road intersection is expected to be finished by the winter, officials said.
City officials are exploring ways to address speeding on two canyon roads.
Caltrans is working on a project to replace and upgrade the Trancas Creek Bridge.
Tow trucks used to have to drive to Thousand Oaks with impounded cars.
Alternating lanes will be closed near Pepperdine University through Wednesday.
The city is eyeing improvements on six streets throughout Malibu for the coming fiscal year.
The city is installing barriers along Cliffside Drive in a bid to ease illegal parking issues.
The city is exploring how it can improve traffic and safety on the busy thoroughfare.
One lane of traffic is closed in each direction on a portion of Pacific Coast Highway in Malibu.
Here's the schedule of PCH lane closures for April 11-14.
Caltrans is working to reconstruct the damaged slope along the shoreline of Ratner Beach.
Crews need to remove a boulder that's at risk of falling onto the thoroughfare.
A single lane of traffic will be closed at various locations on PCH through late May.
A downed power line closed the intersection above Big Dume Beach for several hours Tuesday.
The road was shut down between Piuma Road and Civic Center Way Wednesday morning.
Southern California Edison is working to fix the pole.
Caltrans will remove and replace aging pavement on the busy road.
The Point Dume access road at the end of Westward Beach Road was shut down last week due to a debris flow above the roadway.
Traffic signals were malfunctioning in part of Malibu Friday morning due to a local power outage.
Malibu Canyon Road was closed in both directions Wednesday after a rock slide.