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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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Public Works

County of San Luis Obispo

Public Improvement Standards

These standards are not a substitute for engineering knowledge, experience, or judgment. The users of these standards must still exercise good judgment and where needed seek guidance from an appropriate professional. However, where deviation from these standards is prudent, the user shall follow the Design Exception process; which is also contained herein.

The current standards were approved July 9, 2019 to be used on all projects within the County maintained right-of-way.


Public Improvement Standards