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COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

Public Works will re-open our front counter to the public on July 6 and start providing some modified services.  Our hours will be 8 – 5, with closure from 12 – 1:30 for sanitation. Masks are mandatory in our building, and we ask that you adhere to physical distancing protocol. We will have limited services at our front counter and will not be accepting drop in meetings.  Please contact 805-781-5252 to make an appointment with staff.  Bus passes can be purchased at the Kiosk on the corner of Osos and Palm or by phone via Follow us on Twitter @SLOCountyPWD for the latest updates.

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Division Manager - Joshua Roberts

Mission Statement

Enhancing mobility in our County.

The Transportation division is responsible for the safe and efficient movement of traffic on all County maintained roadways in the unincorporated areas not including State Highways (Maintained by Caltrans) or City Streets (Maintained by the appropriate city or town).

Currently we maintain:

  • 1349 miles of roads
    • 1105 miles of paved road
    • 244 miles of unpaved road
  • 199 bridge structures
  • 624 segments of guardrail
  • 141 cattle guards
  • 22 signalized intersections
  • 1,220 ADA curb ramps
  • 4,950+ road drainage culverts
  • 26,100+ road signs

Related Services

ADA Transition Plan
Bridge Maintenance and Replacement Program
Cooperative Road Improvement Program
Pavement Management Report
Projects to be Completed by County Staff
Road Closures and Delays
Road Maintenance Requests
Street Sweeping Schedule
Traffic Circulation Studies
Traffic Counts
Traffic Regulations Code Book

Related Forms & Documents

Roads Maintenance Report
Previous Traffic Studies

Contact Public Works via web form, email, or call us at (805) 781-5252.