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.

Marshall Petaluma Road milepost 6.40 – Slide Repair



Winter storms during February 2019 caused a slip out on the eastbound direction of Marshall Petaluma Road at milepost 6.40.  This project proposes to install a retaining wall and drainage improvements to restore the roadway shoulder area.


The  estimated $300,000 project will be funded through the Federal Highways Administration’s Emergency Relief Funds plus a local match.

Traffic Impacts

It is expected that one-way access with alternating two-way traffic control will be implemented. There would likely be traffic delays of up to five minutes. Specific traffic control measures and impact details will be publicized once construction plans are approved.


August - October 2024

  • Anticipated construction phase
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