U.S. 101 Bayshore Freeway (Hospital Curve) Lane Reduction Work Completed Ahead of Schedule

All Lanes Reopened

San Francisco County ― This weekend's lane reduction, which began Friday, March 13, to give construction crews safe access to the U.S. 101 Bayshore Freeway (Hospital Curve) in the city of San Francisco to continue work on the median barriers, has finished a segment of this work ahead of schedule. All lanes were reopened today at 3:06 p.m., Sunday, March 15.

The completion of this weekend's median barrier work is part of an ongoing two-year project to rehabilitate the U.S. 101 Bayshore Freeway (Hospital Curve), which began in October 2025. Caltrans is resuming this project which require additional weekend lane reductions on the U.S. 101 Bayshore Freeway (Hospital Curve) on March 20-23, & April 3-6, as part of the Fab 4 Rehabilitation project. Lane reductions will extend from Candlestick Point Recreation Area to Silver Avenue. Crews will close the two fast lanes in the northbound direction and two fast lanes in the southbound direction on March 20-23, & April 3-6. Each weekend's lane reduction closure begins at 11:00 p.m. on Friday and ends at 6:00 a.m. the following day. Monday. Throughout these lane reductions, two lanes will remain open in both the northbound and southbound directions.

Motorists should anticipate delays, consider alternate routes, and allow extra travel time.

Detour Map for Motorists Traveling from and to San Francisco Airport, SFO Rental Car Center and the Peninsula

A dedicated detour map has been prepared for travelers departing from and to the San Francisco International Airport (SFO) and the SFO Rental Car Center as well as travelers driving from the peninsula who are heading toward the San Francisco-Oakland Bay Bridge and/or San Francisco destinations.

The map illustrates the preferred routing during the closure of the fast lanes between Candlestick Point and Silver Avenue.

Driver and Community Benefits

Once complete, the project will:

• Preserve and extend the life of the freeway corridor
• Improve ride quality and driving comfort
• Enhance overall freeway safety

Stay Informed

For the latest updates visit sfhighwayprojects.com where Caltrans will continue to provide updates as schedules are confirmed. Motorists should check back regularly for the latest construction information, traffic impacts, and detour details.

All work is weather dependent. Please drive with caution. Thank you for your patience as we work to maintain our state's highways, bridges, and tunnels.

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

Caltrans appreciates the public's patience and cooperation as we work to maintain and improve California's transportation infrastructure.