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Transportation and Public Works

Roads Division
Transportation and Public Works All of Sonomacounty.ca.gov
County Of Sonoma › Development Services › Transportation and Public Works › Divisions › Roads › Data and Resources › Interactive Maps

Interactive Maps

  • Adopt-a-Road Program Map

    Map showing roads adopted by organizations, corporations, groups and individuals who voluntarily maintain and enhance Sonoma County's roadsides.

  • County Roads Functional Classification Map

    Sonoma County roads symbolized by Functional Classification, as designated by the State of California.

  • County-Maintained Bridges

    Bridges, culverts, storm drains, and various other structures found on Sonoma County roads.

  • County-Maintained Roads by Supervisor District

    Sonoma County Road Categories, as designated by the Sonoma County Board of Supervisors in conjunction with the Department of Transportation & Public Works.

  • Municipal Stormwater & Drainage Map

    Displays storm water destination, and related drainage features, such as streams, open channels, storm drain systems, and culverts.

  • Parking Restrictions Map

    Parking-restricted areas on County-Maintained roads. Features include No Parking Zones, Tow Away Zones, Disabled Parking Zones, Loading Zones, and various other types of parking-restricted areas.

  • Pavement Condition Map

    Pavement condition on Sonoma County roads, as indicated by periodic inspection ratings.

  • Pavement Cut Moratorium Map

    Pavement cuts, by a utility company or any other party, are prohibited on any road that has been repaved within the last five (5) calendar years.

  • Paving Project History Map

    Paving and other road surfacing treatment projects done on Sonoma County roads.

  • Planned Paving Projects Map

    Paving and other road surfacing treatment projects planned during the current and future fiscal years for Sonoma County roads.

  • Postmile System Map

    Displays significant locations along County-maintained roads that have been assigned a postmile. Features include bridges, intersections, culverts, and changes in jurisdiction.

  • Road Categories Map

    Sonoma County Road Categories, as designated by the Sonoma County Board of Supervisors in conjunction with the Department of Transportation & Public Works.

  • Road Closures and Delays

    Map of current road closures in Sonoma County showing their location, status and description.

  • Road Maintenance Facility Assignment Map

    County-maintained roads symbolized by their road maintenance facility designation. NOTE: Roads that are within city limits, state highways, or private property do not belong to the County-maintained road system.

  • Speed Limits Map

    Speed limits and speed surveys on Sonoma County roads.

  • Street & Traffic Lighting Inventory Map

    Traffic Lighting and Street Lighting for County of Sonoma - street lights, flashing beacons, speed radar feedback signs, etc.

  • Traffic Volume Map

    Traffic volume on Sonoma County roads. Features include vehicle counts, taken at point locations, and average volume along linear street sections, derived from vehicle counts.

  • Vehicle Restrictions Map

    Vehicle (length, height, weight) restrictions on county-maintained roads, parking restrictions and seasonally closed roads at summer crossing bridges.