California Department of Transportation

10/12/2026 | Press release | Distributed by Public on 10/12/2026 18:09

This Weekend: Two Partial Lane Closures Planned for Northbound I-280 Freeway

This Weekend: Two Partial Lane Closures Planned for Northbound I-280 Freeway

Published: Oct 12, 2026

Friday, October 16, 10 p.m. to Saturday, October 17, 9 a.m.
Saturday, October 17, 10 p.m. to Sunday, October 18, 10 a.m

San Francisco County - Caltrans has planned two 12-hour lane closures on the northbound Interstate 280 (NB I 280) between Mariposa Street and the I 280/US 101 Interchange to complete work started several weeks ago to rehabilitate this stretch of the freeway. The first closure begins Friday, October 16, 10 p.m. and ends Saturday, October 17, 9 a.m. The hour earlier opening accommodates the WNBA Finals. Go Valkyries!

The second closure begins Saturday, October 17, 10 p.m. and ends Sunday, October 18, 10 a.m. These weekend work windows will allow crews to complete the placing of polyester concrete on the freeway, enhancing long term pavement durability and improving ride quality for motorists. During these closures, two NB I-280 lanes will be closed to traffic, leaving one lane open. All southbound I-280 (SB I-280) lanes remain open.

Closure Details

  • Highway: NB I 280
  • 2 NB I-280 lanes reduced, leaving one lane open for traffic. All SB I-280 lanes remain open.
  • Closure Window:
    • Friday October 16, 10 p.m. to Saturday, October 17. 9 a.m.
    • Saturday, October 17, 10 p.m. to Sunday, October 18, 10 a.m.

Work Description

  • Activity: Repairing unsound concrete
  • Limits: Mariposa to I-280/U.S. 101 Interchange

Motorist Impacts
Motorists should expect delays, plan alternate routes, and drive safely during the weekend northbound lane reductions. Caltrans advises drivers to allow additional travel time and use public transit or alternate highways when possible.

Driver Community Benefits of Completed Work

  • Freeway corridor is now preserved with long-term pavement durability.
  • Ride quality and driving comfort are improved.
  • Overall freeway safety is enhanced.

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.

Thank you for your patience and cooperation.

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.

| CleanCA.com | CleanWaterCA | #BeWorkZoneAlert | X | Facebook | YouTube |

###

California Department of Transportation published this content on October 12, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on October 13, 2026 at 00:09 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]