Update: WB I-80 Bayshore Freeway Weekend Closure Between 5th St. & 15th St.

Friday, October 23, at 11 p.m. to Monday, October 26, 6 a.m.

San Francisco County ― Caltrans has planned a full weekend closure of the westbound Interstate 80 (WB I-80) Bayshore Freeway from 5th St. to 15th St. in San Francisco, scheduled for Friday, October 23, 11 p.m. until Monday, October 26, 6.a.m. Motorists are advised to avoid traveling to San Francisco via the Bay Bridge this weekend and instead use public transportation or alternate routes such as the San Mateo, Dumbarton, or Richmond-San Rafael bridges.

This work is necessary for crews to place polyester concrete on the WB I-80 Bayshore freeway deck and will complete a broader I-80 Bayshore Freeway viaduct polyester concrete placement project which began on the eastbound I-80 Bayshore Freeway earlier this year.

During this weekend's closure motorists must use the Fifth St. exit which is the last exit before the closure. A detour map below details options to get back onto the WB I-80 or to the I-280 freeway. More detour resources for this closure can be found at sfhighwayprojects.com.

Why This Work Is Necessary
The Central and Bayshore freeway viaducts are 71 years old and carry thousands of vehicles daily near the San Francisco-Oakland Bay Bridge corridor. With constant exposure to heavy traffic loads, weather, and seismic demands, the structures require timely rehabilitation to prevent further deterioration. Performing this work now allows Caltrans to address critical maintenance needs, preserve the existing infrastructure, and ensure continued safety for motorists, commuters, pedestrians, and cyclists traveling through and beneath the structures.

Driver and Community Benefits
Once complete, the project will:

• Preserve and extend the life of the viaduct structures
• Improve ride quality and driving comfort
• Enhance overall freeway safety
• Provide safer conditions for pedestrians and cyclists traveling near and beneath the viaducts

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.

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