Construction Updates

If you have questions about any district construction projects, please contact MMWD's Engineering Division at 415-945-1560.


Construction Map

Ross Reservoir

Beginning August 3 through August 28, Dibblee/Lagunitas Road between Natalie Coffin Green Park and Glenwood Avenue will be closed to vehicles, cyclists, and pedestrians from 7:30 a.m. to 4:30 p.m. Monday through Friday, due to the Ross Reservoir landslide repair work. Only vehicles with use permits will be allowed to access the parking lot area. The road and the parking lot at Natalie Coffin Green Park will remain open on weekends. During construction, pedestrians can access the watershed via the Lower Ross Trail.

Click on the map to the right to see the impacted areas.

Sir Francis Drake Boulevard Pipeline Replacement Project

Marin Water is installing a new pipeline under a portion of Sir Francis Drake Boulevard in Kentfield, replacing old pipes that date back to 1920. The new pipeline, which also has features that will improve its seismic reliability, is part of our ongoing work to upgrade aging infrastructure and improve the overall reliability of our system. The cost of the project is $3.9 million, and the majority of the work will occur at night to minimize traffic disruptions. Drivers in the area can expect partial lane closures and some traffic delays.

Construction is being done in tandem with Marin County’s Sir Francis Drake Boulevard Rehabilitation Project, “Upgrade the Drake,” to reduce costs and minimize disruptions. Construction began in June and continues through June of 2022.

To learn more, call 415.688.7613 or visit

MMWD April 2019 - Present:  Almonte - 75% Complete

MMWD will install new pipelines in various streets including Rosemont Avenue, Greenhill Road and Almonte Boulevard in the unincorporated communities of Almonte and Homestead. Learn more.