Malibu, California — One of America’s most iconic coastal highways is facing an uncertain future as Malibu officials warn that rapidly accelerating coastal erosion is threatening sections of the Pacific Coast Highway (PCH).
Concerned that powerful winter storms could dramatically worsen the situation, the city has declared a local emergency and is urging state agencies to move quickly with permanent repairs before conditions become more dangerous.
The Pacific Coast Highway is not only a major transportation route through Southern California but also one of the country’s most recognizable scenic drives, making the growing erosion a significant public safety and infrastructure concern.
City Warns Erosion Is Accelerating
According to the City of Malibu, erosion along portions of the coastline has continued to worsen following the devastating 2025 Palisades Fire, which left nearby hillsides and coastal areas more vulnerable.
City officials said they have worked extensively with Caltrans and other government agencies to document the damage and monitor high-risk locations.
While acknowledging Caltrans’ temporary protective measures, Malibu leaders say permanent stabilization work must begin immediately.
City Manager Joe Irvin said the city appreciates its partnership with Caltrans but stressed that erosion continues to accelerate.
He called for a coordinated long-term stabilization plan with a clear construction timeline before winter storms arrive.
Highway Embankment at Risk of Failure
Photographs released by the city show alarming conditions along portions of the Pacific Coast Highway, including sections where the ground supporting the roadway appears to be eroding toward the ocean.
One area has already been closed off with fencing and marked “Unsafe,” highlighting the growing danger to motorists and nearby infrastructure.
Officials warned that continued erosion is steadily removing the soil that supports the highway embankment.
Without permanent repairs, they say the structural stability of the roadway could become increasingly compromised.
Winter Storms Could Make Situation Worse
City officials believe the greatest threat may come during the upcoming winter season.
Forecasts suggesting heavy rainfall, high surf, and powerful wave events have increased concerns that erosion could worsen dramatically in a short period.
According to Malibu, a single major storm system could cause months’ worth of erosion within days, significantly increasing the risk of roadway damage or failure.
That possibility has intensified calls for emergency action before severe weather arrives.
Malibu Details Steps Already Taken
City leaders say they have exhausted the authority available to them while coordinating with multiple agencies since the Palisades Fire.
Among the actions already completed, Malibu officials said they have:
- Conducted joint inspections with Caltrans at all 16 high-priority red-tagged properties considered immediate risks to the highway.
- Worked closely with Caltrans District 7, Los Angeles County Waterworks District No. 29, and SoCalGas to evaluate nearby utilities.
- Assigned city staff to monitor affected properties and communicate directly with impacted property owners.
- Supported rebuilding efforts through local recovery centers.
- Briefed Los Angeles County officials and the Governor’s Office of Los Angeles Recovery on both wildfire recovery efforts and the growing coastal erosion concerns.
City officials said they remain hopeful that continued coordination between local, county, and state agencies will help prevent a more serious infrastructure failure.
Caltrans Begins Protective Construction
In response to the city’s concerns, Caltrans confirmed that crews have already begun preliminary work along vulnerable portions of the highway.
According to the agency, workers recently installed K-rail barriers along sections of the Pacific Coast Highway, including the 20000 block in Malibu.
Caltrans also said crews are reconstructing the damaged slope near Big Rock while repairing a state-owned seawall near Las Tunas Beach.
The agency added that it continues working alongside Malibu, Los Angeles County, and utility providers to strengthen the highway against future wildfire and storm damage, noting that two additional protective walls were completed in July.
Even with those efforts underway, Malibu officials maintain that long-term stabilization remains urgently needed to protect one of California’s most famous roadways before winter weather puts it at even greater risk.
What are your thoughts on this growing threat to the Pacific Coast Highway? Should California accelerate long-term coastal protection projects before winter storms arrive? Share your opinion in the comments below.
