Fairfax-Bolinas Road in West Marin at milepost 5.73 (approximately 2 miles west of Azalea Hill) is single-lane access with two-way traffic controlled through one lane. This condition is at the construction zone only and will remain in place until project is completed. See project webpage for more details. Thank you for your patience while this project progresses.

When is an Encroachment Permit required?

An Encroachment Permit is required for any work conducted within a County-maintained public right-of-way.  Often, the County-maintained public right-of-way extends beyond the paved street and may extend beyond the sidewalk. An Encroachment Permit allows you to make certain uses and construct certain improvements within a County-maintained public right-of-way, both above and underground.  Examples include, but are not limited to:

  • Installation or repairs to underground utilities
  • Trenching in the right-of-way;
  • Building or repairing a driveway approach and/or sidewalk;
  • Tree trimming or;
  • Any work or event requiring traffic control on the street
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