San Francisco Freeway & Road Rehabilitation

Current Projects

San Francisco-Oakland Bay Bridge Joint Rehabilitation Project

Advisories

• San Francisco-Oakland Bay Bridge Western Span Rehabilitation Project Underway
  Overnight lane closures planned as crews begin bridge joint construction work

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

• San Francisco Overnight Freeway Off-Ramp Closures on I-80, US-101, and I-280, to Install Safety Equipment

Eastbound First St. Bay Bridge On Ramp Closures

The effected days/times are:

• Tuesday February 24 between 11:59 p.m. – 7:00 a.m.
• Wednesday February 25 between 11:59 p.m. – 7:00 a.m.
• Thursday February 26 between 11:59 p.m. – 7:00 a.m.

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 And the fourth project is the rebuilding of an outdated pedestrian overcrossing on the I-280 near Cayuga Park.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

Advisories

• 19th Avenue (State Route 1) Rehabilitation Project Begins Monday, December 1

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
  • 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
  • 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
  • Saturday thru Sunday (3/28/2026 - 3/29/2026)
    • EB-80 Full from 17^th St to 4^th St.

Advisories

• December 31, 2025
  U.S. 101 Bayshore (Hospital Curve) and I-80 Lane Closures - January 5-10, 2026

Bridge Rehabilitation of Central (US 101) and Bayshore (I-80) Viaducts — Construction Underway.

Upcoming Weekday Closures

• Thursday (2/19/26) Night to Friday (2/20/26) Daytime
  • E/B 80 Lane to close (Central and Bayshore Project)
    • Lanes 1 and 2 (101 to Off Ramp 4^th/Bryant) (9:30 p.m. to 6:00 a.m.)
  • E/B 80 Ramp to close (Central and Bayshore Project)
    • Off Ramp (E/B 80 to E/B 7^th St Off Ramp) (9:59 p.m. to 2:00 a.m.)
  • E/B 80 Ramp to close (Central and Bayshore Project)
    • On Ramp (E/B 8^th St/Bryant St On Ramp) (10:59 p.m. to 7:00 a.m.)
  • W/B 80 Connector to close (Central and Bayshore Project)
    • Connector (N/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/7^th St On Ramp) (10:59 p.m. to 2:00 a.m.)
  • W/B 80 Lane to close (Central and Bayshore Project)
    • Lanes 1 and 2 (Off Ramp to 4^th/Bryant to 101 S/B connect) (9:30 p.m. to 6:00 a.m.)
• Friday (2/20/26) Daytime
  • E/B 80 Ramp to close (Central and Bayshore Project)
    • Off Ramp (4^th St/Harrison St Off Ramp) (2:00 a.m. to 6:00 a.m.)
  • W/B 80 Ramp to close (Central and Bayshore Project)
    • On Ramp (4^th St/Harrison St On Ramp) (2:00 a.m. to 7:00 a.m.)

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.

Completed Projects

San Francisco County Completed Projects (from 2024 to present)

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