A southbound lane of Pacific Coast Highway (PCH) between El Moro and Irvine Cove has closed near Laguna Beach after a large crack emerged on the side of a bluff that supports the highway. There is currently no estimated reopening date for the affected lane, and traffic impacts are anticipated for several days.

The closure comes after recent high tides and strong waves impacted coastal Orange County communities, leading to flooding in areas such as Balboa Peninsula in Newport Beach and various streets within Laguna Beach. While the state highway is under Caltrans' jurisdiction and not the City of Laguna Beach's, the city provided an update via an Instagram video on Tuesday afternoon.

Tom Perez, Laguna Beach public works and utilities director, confirmed in the city's video that Caltrans verified the closure is linked to "potential issues in the shoulder of the road." Perez noted that the City of Laguna Beach does not have information regarding the depth or full extent of the crack, but Caltrans is actively investigating the issue to determine necessary repair actions. Laguna Beach City Manager Dave Kiff added in the same video that the duration of the closure will depend on Caltrans' analysis of the problem.

This event follows instances of surface flooding across several Orange County coastal cities caused by Tropical Storm Rachel and unusually high tides. Newport Beach declared a state of emergency on Friday after the Balboa Peninsula experienced significant flooding.

Coastal Orange County is already experiencing severe erosion, according to OC Supervisor Katrina Foley, who represents a significant portion of South Orange County. In a Tuesday afternoon news release, Foley stated that these impacts are occurring even before the escalating effects of an expected "super El Niño" season. The storm season has yet to officially begin.

The National Weather Service is forecasting a "Super El Niño" season, with an 83% probability of a historic event occurring between October and December. This forecast suggests a potentially wet winter coupled with high tides, which could lead to further coastal flooding across the region.

The impacts of coastal erosion are already affecting regional infrastructure. Foley's news release highlighted that coastal transportation infrastructure and the beach economy are increasingly under threat. She cited examples such as waves overtopping railroad tracks in San Clemente, which has disrupted rail service, and the bluff erosion causing the PCH lane closure in Laguna Beach. Meanwhile, the Orange County Transportation Authority (OCTA) has decided to postpone a project designed to reinforce the San Clemente coast until after the anticipated El Niño season concludes. These ongoing and projected challenges underscore the increasing vulnerability of the region's coastal areas.