Daytime Lane Closures for Vegetation Reduction Work in Sausalito


US-101 South lane closure scheduled to start Dec. 5 from 10 a.m. until 4 p.m.

MARIN COUNTY — Caltrans will start segment 2 of its roadside vegetation reduction work in November and December along US-101 in Sausalito. This work reflects Caltrans’ partnership with the Southern Marin Fire Department and is part of a state-wide effort to reduce fires throughout California. The first segment started in October and concluded in November in Mill Valley.

Map showing the location of the Vegetation Reduction Project near Sausalito, CA.Starting on Monday, December 5, Caltrans will close the far right lane on US-101 southbound near the Rodeo Avenue off-ramp in Sausalito between 10 a.m. and 4 p.m. Three lanes will remain open. Caltrans will continue work along US-101 southbound, just north of the Robin Williams Tunnel and then will move to US-101 northbound. Work hours are Mondays through Fridays.

Segment 2 is expected to last about three months with lane closures in the area. The Spencer Drive off-ramp may need to be closed later in the project.

Work is dependent on weather conditions.

Changeable Message Signs (CMS) will be on site to let drivers know about the upcoming work.

Caltrans is working with local, regional, and state fire marshals to prioritize areas for vegetation control projects to reduce the ability for a fire to spread quickly.

The work will include mowing, removing low-hanging limbs from trees that assist a fire to climb into the canopy, removing dead and dying trees and thinning dense tree stands. Trimming and removals will be prescribed by a registered professional forester trained in forest fire fuel reduction.

Changeable message and directional signs will be in place to assist motorists traveling in the area. The California Highway Patrol (CHP) will be on-site during the closures.

Please drive with caution. Slow for the Cone Zone and Be Work Zone Alert. Caltrans thanks motorists for their patience while we work to maintain our state's highways, bridges, and tunnels.

Additional project information is available at:
For 24/7 traffic updates, follow
For real-time traffic, click on Caltrans QuickMap: