Carlsbad declared a local emergency Wednesday, Sept. 9, to fast-track rock placement along an eroding stretch of south Carlsbad Boulevard near Las Encinas Creek.

The move follows a geotechnical report the city received Tuesday, Sept. 8, recommending that crews extend the existing boulder revetment about 192 feet northward to protect the roadway and bluff. Boulders weighing four to eight tons each could start going in as early as the week of Sept. 14, pending an emergency coastal development permit from the California Coastal Commission, according to the city.

Drivers on Carlsbad Boulevard should expect intermittent southbound lane closures between Palomar Airport Road and Island Way once construction begins.

Cracks spotted in June

City staff first noticed cracks in the pavement shoulder and bike lane during routine inspections on June 25. Workers placed orange cones and caution signs, sealed the cracks and began regular monitoring. In mid-July, the city hired an independent geotechnical consulting firm to investigate bluff stability.

Staff then met with California Coastal Commission officials beginning in August to discuss the erosion and a permit application.

The existing revetment runs 1,270 feet along the base of the bluff. The first 750 feet were installed in 2009, and another 520 feet followed in 2015 and 2016. The city said the road above that older barrier is holding steady, but new cracks are appearing on pavement just north of where the rocks end.

Fifth emergency this year

The Sept. 9 declaration is at least the fifth local emergency Carlsbad has issued in 2026. Earlier emergencies addressed storm drain damage and bluff erosion near Solamar Drive in January and a water main break at El Camino Real and Carlsbad Village Drive the same month.

The city also declared emergencies for a sewer pipe failure in the Ponto area in May and a partially collapsed sewer line near Agua Hedionda Lagoon in June, as the San Diego Union-Tribune reported.

City Manager Geoff Patnoe said the pattern reflects a deliberate strategy. "We understand this is a heavily traveled roadway, and maintaining its integrity is essential to protecting public safety, as well as property and our coastal environment," Patnoe said in the city's Sept. 9 announcement.

The city cited preparation for possible strong El Niño conditions as part of its rationale for reinforcing coastal infrastructure.

What's next

The emergency declaration took effect immediately. The Carlsbad City Council is scheduled to vote on whether to confirm it at its Tuesday, Sept. 15, meeting. If confirmed, the council would review the declaration at subsequent meetings until it formally ends the emergency.