San Francisco Freeway & Road Rehabilitation
Upcoming Full Weekend Closures
Bridge Rehabilitation of Central (US 101) and Bayshore (I-80) Viaducts
- Saturday thru Sunday (3/28/2026 - 3/29/2026)
- EB-80 Full weekend closure from 17th St. to 4th St. - 12-hour closure
- Friday thru Monday (4/10/2026 - 4/13/2026)
- 4th St Off ramp Full weekend closure (EB-80)
- Friday thru Monday (4/17/2026 - 4/20/2026)
- EB-80 Full closure (55 hour) from 17th St to 4th St.
Traffic Advisories
- February 21, 2026
EB I-80 Bayshore Freeway 4th St. Off-ramp Reopens - February 13, 2026
Weekend Closure of EB I-80 Bayshore Freeway 4th St. Off-ramp Friday, February 20 to Monday, February 23
Exciting changes are underway on San Francisco’s roads and freeways, specifically on I-280, the U.S. 101 Hospital Curve, the Central Freeway, and SR-1 (19th Avenue). We call them the Fab 4! Each project will receive major repaving and rehabilitation, helping create safer, smoother driving experiences for everyone who drives to, from, and in and around the San Francisco Bay Area. Work has just begun on the U.S. 101 Hospital Curve of the Bayshore freeway, and on SR-1 (19th Avenue). The U.S. 101 Central freeway and SR-1 (19th Avenue) projects begin in Spring 2026 and Summer 2026, respectively.
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 Projects
San Francisco-Oakland Bay Bridge Joint Rehabilitation Project
Project Schedule — through 2027
- Sunday (3/1/26) Night to Monday (3/2/26) Daytime
- E/B 80 Lanes to close (West Span Joint Rehab Project)
- Lanes 1 and 2 (To Yerba Buena Island) (11:00 p.m. to 7:00 a.m.)
- Lane 3 (To Yerba Buena Island) (11:59 p.m. to 7:00 a.m.)
- ON RAMP (First St E/B 80 ON RAMP) (11:59 p.m. to 7:00 a.m.)
- E/B 80 Lanes to close (West Span Joint Rehab Project)
- Monday (3/2/26) Daytime
- W/B 80 Lane to close (Caltrans Maintenance)
- Right Shoulder (Ala/SF Co Ln) (11:00 a.m. to 3:30 p.m.)
- E/B 80 Lane to close (by Caltrans Maintenance)
- Lane 1 (To Yerba Buena Island Tunnel) (7:00 a.m. to 2:00 p.m.)
- W/B 80 Lane to close (Caltrans Maintenance)
Eastbound First St. Bay Bridge On Ramp Closures
The effected days/times are:
- Friday (2/27/26) Night to Saturday (2/28/26) Daytime
- W/B 80 Lanes to close (Baylights Project)
- Lane 5 (Treasure Island to Rincon Hill) (9:30 p.m. to 7:00 a.m.)
- Lane 4 (Treasure Island to Rincon Hill) (11:00 p.m. to 5:00 a.m.)
- W/B 80 Lanes to close (Baylights Project)
- Sunday March 1 between 11:00 p.m. – 7:00 a.m. (1st street on ramp)
- Monday March 2 between 11:59 p.m. – 7:00 a.m. (1st street on ramp)
- Sunday through Thursday, 3/8 between 11:00 p.m. – 7:00 a.m. (1st street on ramp and Essex on ramp)
- Sunday through , 3/15 between 11:00 p.m. – 7:00 a.m. (1st street on ramp and Essex on ramp)
Advisories
The San Francisco Striping and Signage Project on I-280, I-80 and US-101
These ramp closures on I-280 are the first of several ramp closures required on I-80, and US-101 to allow crews to safely install new roadway striping and reflective signage. This effort is a safety project to prevent wrong-way drivers from entering freeways.
Advisories
Caltrans has launched a major effort to revitalize San Francisco’s most used roads and freeways. 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 Park and San Francisco State University. And the fourth project is the rebuilding of an outdated pedestrian overcrossing on the I-280 near Cayuga Park.
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
Current Fab-4 Projects
19th Avenue Repaving, on SR-1
Image from work on the 19th Avenue Paving and Rehabilitation Project
Image of completed work on the 19th Avenue Paving and Rehabilitation Project
Advisories
San Francisco US-101 (Hospital Curve) Rehabilitation — Construction Underway
Image of work on the San Francisco US-101 Rehabilitation Project
- This work is weather dependent.
- Friday thru Monday (3/6/2026 - 3/9/2026)
- 101 NB & SB 2 fast lanes in Seg 1 (1st of 3 closures)
From Candlestick Park to Silver Ave
- 101 NB & SB 2 fast lanes in Seg 1 (1st of 3 closures)
- Friday thru Monday (3/13/2026 - 3/16/2026)
- 101 NB & SB 2 fast lanes in Seg 1 (2nd of 3)
From Candlestick Park to Silver Ave
- 101 NB & SB 2 fast lanes in Seg 1 (2nd of 3)
- Friday thru Monday (3/20/2026 - 3/23/2026)
- 101 NB & SB 2 fast lanes in Seg 1 (3rd of 3)
From Candlestick Park to Silver Ave
- 101 NB & SB 2 fast lanes in Seg 1 (3rd of 3)
- Saturday thru Sunday (3/28/2026 - 3/29/2026)
- EB-80 Full from 17th St to 4th St.
- Friday thru Monday (3/6/2026 - 3/9/2026)
Advisories
Bridge Rehabilitation of Central (US 101) and Bayshore (I-80) Viaducts — Construction Underway.
Upcoming Weekday Closures
- Friday (2/27/26) Night to Saturday (2/28/26) Daytime
- E/B 80 Lane to close (Central and Bayshore Project)
- Lanes 2 and 3 (101 to Off Ramp 4th/Bryant) (11:59 p.m. to 6:00 a.m.)
- E/B 80 Ramp to close (Central and Bayshore Project)
- On Ramp (E/B 8th / Bryant St On Ramp) (10:59 p.m. to 7:00 a.m.)
- E/B 80 Ramp to close (Central and Bayshore Project)
- Off Ramp (E/B 80 to E/B 7th St Off Ramp) (10:59 p.m. to 7:00 a.m.)
- W/B 80 Connector to close (Central and Bayshore Project)
- Connector (W/B Connector to 101 N/B) (11:59 p.m. to 5:00 a.m.)
- W/B 80 Ramp to close (Central and Bayshore Project)
- On Ramp (Harrison St/7th St On Ramp) (10:59 p.m. to 2:00 a.m.)
- W/B 80 Lane to close (Central and Bayshore Project)
- Lanes 2 and 3 (Off to 4th/connector from 101 S/B) (10:59 p.m. to 6:00 a.m.)
- E/B 80 Lane to close (Central and Bayshore Project)
- Saturday (2/28/26) Daytime
- WW/B 80 Ramp to close (Central and Bayshore Project)
- On Ramp (4th St/Harrison St On Ramp) (2:00 a.m. to 7:00 a.m.)
- WW/B 80 Ramp to close (Central and Bayshore Project)
Upcoming Full Weekend Closures
- Saturday thru Sunday (3/28/2026 - 3/29/2026)
- EB-80 Full weekend closure from 17th St. to 4th St. - 12-hour closure
- Friday thru Monday (4/10/2026 - 4/13/2026)
- 4th St Off ramp Full weekend closure (EB-80)
- Friday thru Monday (4/17/2026 - 4/20/2026)
- EB-80 Full closure (55 hour) from 17th St to 4th St.
Advisories
- February 21, 2026
EB I-80 Bayshore Freeway 4th St. Off-ramp Reopens - February 13, 2026
Weekend Closure of EB I-80 Bayshore Freeway 4th St. Off-ramp Friday, February 20 to Monday, February 23 - February 4, 2026
Weekend Closure of EB I-80 Bayshore Freeway 4th St. Off-ramp Friday, February 20 to Monday, February 23 - January 21, 2026
Caltrans Begins Rehabilitating Central (U.S. 101) and Bayshore (Interstate 80) Viaducts
Upcoming Fab-4 projects:
- The Farallones Street Pedestrian Overcrossing Project, on I-280 — begins Spring 2026.
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 Emergency Barrier Repair Project Media Resources Page.
San Francisco-Oakland Bay Bridge Joint Rehabilitation Project
Additional project resources including downloadable maps, image galleries, and video clips can be found on the San Francisco-Oakland Bay Bridge Joint Rehabilitation Project 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
Thank you for your patience as we work to improve our roads and infrastructure.
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