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San Diego City Declares Emergency to Protect Coastal Highway 101 From Erosion

The city of Carlsbad, a coastal community in Southern California’s San Diego County, has declared a local emergency amid possible strong El Niño conditions this winter.

After hurricane-induced swells battered California’s coastline, the city moved to expedite stabilization of an eroding coastal bluff supporting a section of south Carlsbad Boulevard, also known as Highway 101.

The erosion is north of the Las Encinas Creek bridge, according to a Sept. 10 city news release. Workers plan to extend an existing rock revetment about 192 feet north to protect the bluff, roadway and coastal access.
The Carlsbad declaration follows coastal emergencies elsewhere in Southern California after Hurricane Marie generated powerful swells and high tides. At least 16 homes 20 miles North of Carlsbad along Beach Road in Dana Point have been red- or yellow-tagged, city officials there said. Nine were red-tagged, and seven were yellow-tagged, indicating varying levels of structural danger.
Laguna Beach declared an emergency Sept. 10 after hurricane swells removed large amounts of sand, damaged sea walls and threatened oceanfront homes, according to a city release. Six homes were yellow-tagged, and part of the Aliso Beach parking lot failed.

In Carlsbad, city employees discovered the erosion during a routine June inspection. The city placed cones and warning signs near the affected area, sealed pavement cracks to keep out moisture, and began monitoring the bluff for movement.

Independent geotechnical experts thereafter inspected the bluff and roadway. Their report, received this week as Southern California’s coast was hammered with swell, recommended emergency stabilization, including the revetment extension. The city declared the emergency Sept. 9, allowing it to bypass a formal bidding process that could otherwise take months.

The city is working with the California Coastal Commission to secure an emergency permit. Crews could begin placing boulders weighing several tons each as early as the week of Sept. 14. Drivers could encounter intermittent lane closures and delays on southbound Carlsbad Boulevard during construction.

About 6 of Carlsbad’s 7 miles of coastline, including Tamarack State Beach, are owned and managed by California State Parks. Carlsbad officials said they cannot lead repairs on state property but can act on city-owned land and within municipal rights-of-way.

About 20 oceanfront homes on the Long Beach Peninsula were evacuated this week after the hurricane-driven waves damaged a seawall and part of a boardwalk. The precautionary evacuations covered Seaside Walk between 63rd Place and 67th Place. Crews reinforced damaged seawall sections and distributed sandbags after water affected 12 garages and two homes.

Laguna Beach’s emergency proclamation cited a greater than 90 percent chance of a very strong El Niño during fall and winter 2026 and 27. The forecast increased concern that additional storms could worsen erosion and threaten homes, beaches, roads, and other coastal infrastructure.



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