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.

Redwood Highway Utility Undergrounding



The project will remove the overhead utility wires (Electrical, Cable and Telephone) and utility poles along the stretch of Redwood Highway Frontage Road and install them in an underground trench.  This project is part of the California Public Utilities Commission’s Rule 20A Program, which allocates ratepayer-funded work credits to local communities to fund utility underground conversion projects.


A portion of the design and all of the construction is being paid for by funds that are allocated to public agencies by PG&E for utility undergrounding projects.  A portion of the engineering design cost is coming from the County Road & Bridge Fund.

Traffic Impacts

There will be traffic impacts on Redwood Highway Front Road during the construction of the trench.  Undergrounding the overhead utility cables and removing the utility poles will beautify the stretch of Redwood Highway between Seminary Drive and Belvedere Drive.


Spring 2023

  • Anticipated start of construction
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