Progress Continues on Major Pipeline Relining Project
Construction on a major pipeline relining project is progressing in La Mesa, with steel liners being installed through portals that provide underground access to the large-diameter pipe.
The Lake Murray to Sweetwater Reservoir Pipeline 3 Relining Project will rehabilitate approximately 4 miles of the Water Authority's 66-inch and 69-inch diameter pipe between Lake Murray and Sweetwater Reservoir, extending the pipeline's service life and ensuring continued water system reliability. Construction began in September and is anticipated to continue through summer 2018.
Once the steel liners are installed, the segments are welded along the seams and joints. Later, the space between the old pipe and the new liners is filled with grout, and mortar is applied to the inside of the liners to prevent corrosion.