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Interactive Maps

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

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

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

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

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

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

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

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

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

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

  • Map of current road closures in Sonoma County showing their location, status and description.
  • 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 and speed surveys on Sonoma County roads.

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

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