Ramp, Lane Closures Scheduled at Night For Richardson Bridge


SR-1, US-101 northbound connector ramp closed Sunday, Oct. 2 through Thursday, Oct. 6

MARIN COUNTY — Caltrans will continue construction on the Richardson Bridge project in October along US-101 northbound. The construction work will involve the replacement of the existing asphalt concrete bridge deck surface with concrete in both the northbound and southbound directions of US-101 at Richardson Bay Bridge in the Sausalito and Mill Valley areas.

Map showing the location on US 101 of the Richardson Bridge Project in Marin County.The State Route 1/US-101 northbound connector ramp in Mill Valley will be closed Sunday, October 2, from 9 p.m. until 6 a.m. the following morning. The connector ramp also will be closed from Monday, October 3, to Thursday, October, 6, from 10 p.m. until 6 a.m. each night.

Detour due to connector ramp
Continue southbound on State Route 1 (Shoreline Highway)
Take the on-ramp to US-101 southbound
Drive about a half mile on US-101 southbound
Take the off-ramp (Exit 445A) to Marin City/Sausalito, east of Donahue Street
Go northbound on Bridgeway onto US-101 northbound

Additionally, there will be lane closures from Sunday, October 2 to Thursday, October 6 each night. On Sunday, two lanes on US-101 north will be closed from 5 p.m. until 8 a.m. and a third lane will be closed from 9 p.m. until 8 a.m. Two lanes will remain open.

From Monday, October 3, to Thursday, October 6 two lanes will be closed from 9 p.m. until 8 a.m. A third lane will be closed from 10 p.m. until 6 a.m. Two lanes will remain open.

The lane closures start just south of the Bridgeway on-ramp and end right before the Seminary Drive exit in Mill Valley.

The bicycle lane on the US-101 northbound shoulder will be shut down during construction hours. Cyclists should take a detour to US-101 southbound onto the Mill Valley Sausalito bike path, take a right on Hamilton Drive and a left on Redwood Highway Frontage Road. Detour signs have been posted.

Residents in the area may experience noise and some dust due to the work. The need for the project is to preserve the existing bridge and to decrease the probability of costly repairs in the future.

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: http://101express.com/
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For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/