Trail Alerts

For updates on work at the Harry Tracy Water Treatment Plant, please visit

Wednesday, April 18, 2012

Upcoming Construction Work on Crystal Springs Road

Beginning late May 2012, our contractor Ranger Pipelines will replace a stretch of aging water pipeline along Crystal Springs Road between Polhemus Road and Skyline Blvd. Much of this work requires an open trench installation process. Construction work will take place Monday to Friday only, and steel plates will cover the trenches or pits each weekend. During work hours, Crystal Springs Road will periodically be reduced down to one lane. Flaggers will be present to safely direct traffic through the one open lane.

The project will continue north along Crystal Springs Road, with several locations on Crystal Springs between Skyline Blvd. and El Cerrito Road. Work will also take place on the Tartan Trail Road, just north of the intersection of Polhemus and Crystal Springs.

The construction is scheduled to take place between May and October 2012. Restoration of the roads is anticipated in late 2012 after the water pipeline project is completed.

This work is part of our Crystal Springs Pipeline No. 2 Replacement Project.  This regional water delivery pipeline serves unincorporated San Mateo County, Hillsborough, Burlingame, Millbrae, San Bruno, South San Francisco, Brisbane and Daly City.

Work hours:
Monday to Friday, 8 a.m. to 5 p.m.


  1. Is this the pounding sound that we hear starting at 7:45 almost every morning in san bruno and millbrae? i can't wait for this to be done. How much longer is the pounding projected to last?

    1. Thank you for your question. The road closure on Crystal Springs Road at Skyline is to replace a regional water pipeline, but that is not the source of the pounding. The pounding you hear near San Bruno is pile driving for the foundation of the new 11 million gallon Treated Water Reservoir at the Harry Tracy Water Treatment Plant.

      The pile driving is currently scheduled to finish in early October.

      For more information and updates about the Harry Tracy project, please visit