About the Department



The Public Works Department provides for the construction, maintenance and improvement of infrastructure within the unincorporated area of the County and the Flood Control District as well as county buildings and grounds. The department is organized to conform to the process of developing and building projects. Public Works maintains 660 miles of roads and 150 miles of streams; channels and other drainage facilities as well as maintains 93 county buildings.

To see a list of services we provide click here.

Notice of Public Land Sale



Contra Costa County will sell individually at public auction on January 16, 2018, at 10:00 a.m., the real properties hereinafter described, which are no longer required for public use:
3036 Avon Lane, San Pablo (Assessor's Parcel No.: 416-022-017)
3160 & 3168 Rollingwood Drive, San Pablo, (Assessor's Parcel Nos.: 416-013-020 & -024)

Click here for additional information, visit the Public Works Department, located at 255 Glacier Drive, Martinez, CA  94553, or may be requested by phone to be mailed by calling Jewel Lopez at (925) 313-2191.



  1. Canal Road/Alves Lane in Bay Point Temporary Road Closure

    The closure will start on September 18 and is anticipated to be completed in February 2018. Read on...
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ALHAMBRA VALLEY ROAD WASHOUT REPAIR

Click here to get information about this project and the weekly newsletter.