PROJECT UPDATE

The Lake Murray to Sweetwater Reservoir Pipeline 3 Relining Project will rehabilitate approximately 4 miles of 66-inch and 69-inch diameter pipe between Lake Murray and Sweetwater Reservoir. The project will extend the pipeline's service life and ensure continued water system reliability. The San Diego County Water Authority appreciates your patience as we perform critical work to extend the pipeline's service life and ensure continued water system reliability.

Construction activities in La Mesa are on-schedule, with pipeline relining work moving in a north to the south direction. Liner Installation Halfway Complete The pipeline relining project reached a major milestone with 50 percent of the project’s liners installed – that’s two miles of steel liners ! Most of the installed liners are in the City of La Mesa. Liner installation is now focused at sites south of Highway 94 in Spring Valley, at Portal 10 near Sprouts Farmers Market, and at Portal 8 on Nebo Drive, near the American Legion in downtown La Mesa. After liners are installed, they are welded together. Grout and cement is then placed inside and outside the liners. The project is on schedule to be complete this summer.

Steel liners are welded together laterally and circumferentially. In the News CBS News 8 went “underground” in December to get a closer look at the pipeline relining project. It was a unique opportunity to bring viewers behind-the-scenes, since most of the work is accomplished underground, out of view of the general public. The project’s relining method is a quicker, more cost-effective alternative to excavating, removing and replacing the entire pipeline. Click here to view the news segment.

Trail and park users should look for trail signs and watch for construction vehicles. Click here to view a map of the trail detours and closures. Temporary Trail Detours at Sweetwater Summit Regional Park Work will soon begin at Portal 18, the most southerly project work site, in Sweetwater Summit Regional Park. The Water Authority has been working with the County of San Diego’s Parks and Recreation Department staff to discuss and minimize park, visitor and equestrian disruptions since the work requires temporary trail detours and closures.

The interactive project map is revised weekly with project and work completion updates. Click here to zoom in for specific portal information that's updated weekly. Schedule and Work Hours As a reminder, overall project work will take place from fall 2017 through summer 2018, Monday through Saturday, 7 a.m. to 7 p.m. Some nighttime work may be required, however, impacted neighbors will be notified. Some portal work in the City of La Mesa is expected to be complete before summer. The interactive project map is updated weekly, as project milestones are achieved. Click here to access the interactive map.

Click Here To Learn More

For More Information | Call: (877) 682-9283, ext. 7005 Email: CIPinfo@sdcwa.org| Web: www.sdcwa.org/LM-Sweetwater-Relining