San Francisco Freeway & Road Rehabilitation
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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.
To learn more about these projects, visit Welcome to the Fab-4 Rehabilitation Projects Toolkit | Caltrans.
Current
Striping and Signage Project of off-ramps at I-80, US-101, and I-280 to prevent wrong-way drivers from entering freeway
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:
- Sunday (9/14/25) Night to Monday (9/15/25) Daytime
- E/B 80 Lanes to close (West Span Joint Rehab Project)
Lanes 1,2 and 3 (Rincon Hill to Yerba Buena Island) (11:00 PM to 6:30 AM)
- E/B 80 Lanes to close (West Span Joint Rehab Project)
- Monday (9/15/25) Daytime
- E/B 80 Lane to close (by Caltrans Maintenance)
Lane 1 (To Yerba Buena Island Tunnel) (6:30 AM to 2:00 PM) - W/B 80 Lane to close (04-PER186)
Lane 1 (WB 4th/Harrison St ON RAMP) (10:00 AM to 4:00 PM) - E/B 80 Lane to close (04-PER186)
Lane 1 (EB 4th/Bryant St OFF RAMP) (10:00 AM to 3:00 PM)
- E/B 80 Lane to close (by Caltrans Maintenance)
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 And the fourth of these projects is the rebuilding of an outdated pedestrian overcrossing on the I-280 near Cayuga Park.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. Visit here to learn more about these four important projects: Welcome to the Fab-4 Rehabilitation Projects Toolkit | Caltrans
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