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San Francisco–Oakland Bay Bridge (SFOBB) West Span Joint Rehabilitation Project

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Phase 2 Completed

Phase 3 of Project Begins March 8, 2026

Caltrans trucks on the Bay Bridge as San Francisco–Oakland Bay Bridge (SFOBB) West Span Joint Rehabilitation Project Phase 2 is completed.

San Francisco County ― Caltrans recently completed Phase 2 of the San Francisco–Oakland Bay Bridge (SFOBB) West Span Expansion Joint Rehabilitation project. This project began in August 2025, to rehabilitate the finger joints and reconstruction of selected bridge joints on both upper and lower decks. Construction for this project occurs mostly during nighttime hours and will be completed by June 2027.

On March 8, 2026, Phase 3 of the project will begin. This phase of the project involves removing the temporary underdeck platforms installed during Phase 2. While this work is underway, a truck will be used for installation, temporarily reducing vertical clearance by approximately 15 feet at the span location.

During Phase 3, Caltrans will also install a temporary mid‑span platform in Span C–D (W4–W5). This installation will be underway through May 2026.

Caltrans appreciates the cooperation of the maritime community during this essential safety and rehabilitation work.

Caltrans finishing up work on the Bay Bridge as San Francisco–Oakland Bay Bridge (SFOBB) West Span Joint Rehabilitation Project Phase 2 is completed.

Caltrans working on the Bay Bridge as San Francisco–Oakland Bay Bridge (SFOBB) West Span Joint Rehabilitation Project Phase 2 is completed.

Caltrans finishing up work on the Bay Bridge as San Francisco–Oakland Bay Bridge (SFOBB) West Span Joint Rehabilitation Project Phase 2 is completed.

 

Driver and Community Benefits
Once complete, the project will:

  • Preserve and extend the life of the bridge structures
  • 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: https://quickmap.dot.ca.gov/

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

For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.