San Francisco Freeway & Road Rehabilitation
Exciting new changes are in store for San Francisco’s roads and freeways which will create safer and smoother driving experiences for everyone who drives to, from, and in and around the San Francisco-Bay Area region. These new changes begin September 2024, when Caltrans D4 launches five major freeway and road rehabilitation projects along Bayshore and Central freeways-- US-101, I-280, and 19th Ave. (SR-1). These projects will be phased in over four years.
These rehabilitation projects will provide extensive repairs and upgrades to restore the structural integrity and enhance the safety of San Francisco’s most used freeways by motorists, where approximately 44,900 people travel daily. This comprehensive overhaul will include repaving, bridge reinforcements, median barrier repairs, drainage upgrades, polyester overlays, a new pedestrian overcrossing, joint replacements, and much more to ensure long-term reliability for residents, students, visitors, and the people working in business and organizations throughout San Francisco.
Three of these projects are taking place along the Bayshore and Central freeways US-101 and I-80. Another project will rebuild an outdated pedestrian overcrossing on the I-280 freeway and rehabilitate seven bridges (ramps) along 280. There will also be a repaving of the entire 19th Avenue (SR-1) between the Golden Gate Bridge and San Francisco State University. Read details about each of these exciting projects below.
Current
San Francisco Oakland Bay Bridge Cable Inspection
- Nighttime Lane Closures on WB I-80 San Francisco/Oakland Bay Bridge Due to Routine Cable Inspection and Maintenance Beginning September 26 from 8:00 PM to 4:00 AM — currently underway through August 2025.
Interstate 280 Bridge Rehabilitation
Bridge Barrier Rehabilitation at 3rd and 23rd streets, Northbound US-101/Paul Ave. Off-Ramp Closed
Completed Projects
San Francisco County Completed Projects (from 2024 to present)
Current Project Details:
-
San Francisco/Oakland Bay Bridge Cable Inspection Project
The San Francisco/Oakland Bay Bridge cable inspection-project will require nightly partial lane closures on the San Francisco-Oakland Bay Bridge (weather permitting) through June 2025. Upcoming closures are listed below:- Friday (4/18/25) Night to Saturday (4/19/25) Daytime
- W/B 80 Lane to close
Lanes 1, 2 and 3 (From Yerba Buena Island) (9:00 PM to 5:00 AM) - E/B 80 Lane to close
Lanes 5 (To Yerba Buena Island) (11:59 PM to 6:00 AM)
- W/B 80 Lane to close
- Monday (4/21/25) Daytime
- E/B 80 Lane to close (by Caltrans Maintenance)
Lane 1 (W1 to Yerba Buena Island Tunnel) (6:00 AM to 2:00 PM)
- E/B 80 Lane to close (by Caltrans Maintenance)
- Friday (4/18/25) Night to Saturday (4/19/25) Daytime
- Bridge Barrier Rehabilitation at 3rd and 23rd streets, Northbound US-101/Paul Ave. Off-Ramp Closed — through July 2025
- Interstate 280 Bridge Rehabilitation — begins October 24, 2024
- This project has been suspended until nighttime temperatures are suitable for placing polyester concrete.
Of the San Francisco freeway rehabilitation projects coming soon, four will rehabilitate San Francisco’s major freeway arteries. We refer to them as the Fab-4 Rehab projects which will create safer and smoother driving experiences in and around San Francisco. Two of these projects are taking place along the Bayshore and Central freeways US-101 and I-80. A third project will be the repaving of the entire 19th Avenue (SR-1) between the Golden Gate Bridge and San Francisco State University. And the fourth of these projects is the rebuilding of an outdated pedestrian overcrossing on the I-280 near Cayuga Park. Specific groundbreaking dates for these projects are coming soon. Please read more below about each project.
Upcoming projects:
- 19th Avenue Repaving, on SR-1 — begins 2025.
- Bridge Rehabilitation of Central (US 101) and Bayshore (I-80) Viaducts — begins spring 2025.
- San Francisco US-101 Rehabilitation — begins autumn 2025.
- The Farallones Avenue Overcrossing, on I-280 — begins 2027.
Project Media Gallery
Emergency Barrier Repairs, US-101 & US-80
Additional project resources including downloadable maps, image galleries, and video clips can be found on the media resources page.
Contact
For real-time traffic, click on Caltrans QuickMap: https://quickmap.dot.ca.gov/
For 24/7 traffic updates, follow 511.org: https://x.com/511SFBay
For more information contact:
Lori Shepherd
Public Information Officer
San Francisco County CALTRANS - District 4