Repair of a Deteriorated Timber Seawall at the Port of Los Angeles, Berth 240 A, B, C

This paper will discuss the challenges and opportunities that the Port of Los Angeles encountered during the design and construction of the Berth 240 A, B, C Seawall Repair and Backland Improvement project within an operating oil terminal. The designed rehabilitation included bulkhead wall repair, slope reinforcement and stabilization, and grout injections to fill voids and to compact the soil behind the seawall. The repair is expected to extend the life of the existing seawall by approximately 10 years. Port of Los Angeles performed a value engineering analysis and used a state-of-art polyurethane grout injection method that provided cost and time savings. The method minimized interruption to terminal operations during the repair construction, was safe to marine environments, and complied with stringent state regulations. This project is a prototype for the Port of Los Angeles and sets the precedence for future design/repair projects that include underground voids in their scope.