The first phase of a multimillion dollar construction project by Los Angeles County to repair several thousand feet of the seawall protecting Marina del Rey is now underway, Supervisor Don Knabe announced this week.
The Marina seawall consists of 728 reinforced concrete panels spanning approximately 7.2 miles of land within the Marina. Voids of varying sizes have been detected at the bottom of approximately 17,600 lineal feet of seawall resulting from consolidation and loss of underlying soils from groundwater fluctuations caused by tidal changes. The voids have the potential to compromise the long-term structural integrity of the seawall.
The first phase of the project is now underway and will target repairs along 1,600 feet of the seawall. The $5,350,000 budget for Phase I of the project will fund repairs on the largest and most critical gaps in the seawall. Construction includes grouting voids, placement of filter fabric and bedding stone, and installation of a 3-foot minimum layer of armor rock protection at the base of the wall.
Most of the work will be completed by a team of divers and a water-based derrick crane. In some areas, the rock will be placed using a land-based crane with the contractor coordinating the construction schedule with local businesses to minimize disruption of services and access to docks.
These seawall repairs are absolutely critical and will be completed as soon as possible, said Supervisor Knabe. This project is designed to further increase the safety of the residents and visitors of Marina del Rey.