California Department of Transportation

04/22/2026 | Press release | Distributed by Public on 04/22/2026 17:50

Overnight Lane Closures Scheduled on U.S. 101 in San Mateo County

Overnight Lane Closures Scheduled on U.S. 101 in San Mateo County

Published: Apr 22, 2026

Schedule: Weekdays, April 23 - May 20, 9 p.m. to 5 a.m.

San Mateo County ― Caltrans has scheduled intermittent closures of the northbound right lanes (sometimes called "slow lanes") of U.S. 101 between Whipple Ave. in Redwood City and Broadway Ave. in Burlingame so that crews can repair guardrails and perform paving operations. The work will also require intermittent ramp closures throughout the project limits.

Nighttime closures will start at 9 p.m. and end at 5 a.m. in the northbound lanes. Work will be carried out in accordance with the following schedule, depending on weather:

  • Thursday, April 23 - Friday, April 24
  • Monday, April 27 - Friday, May 1
  • Monday, May 4 - Friday, May 8
  • Monday, May 11 - Friday, May 15
  • Monday, May 18 - Wednesday, May 20

Upcoming detours on U.S. 101 at University Avenue

Northbound U.S. 101 off-ramp to University Ave.
Take the off-ramp to eastbound Willow Rd. Turn right on Newbridge St. to Bay Rd. to University Ave.

Northbound U.S. 101 on-ramp to University Ave.
Take University Ave. north to Bay Rd., turn left on Bay, turn right at Newbridge St., turn left on Willow, and enter the on-ramp to U.S. 101.

Drivers should follow posted detour signs when ramps are closed.

This work is part of the $177M U.S. 101 (San Mateo County) Multi-Asset Rehabilitation & Roadside Safety Project. The project scope includes paving, guardrail improvements, transportation management system enhancements, drainage upgrades, and Americans with Disabilities Act-compliant curb ramps. The project will bring operational improvements and promote economic vitality in the region. The project is funded by the State's Highway Operation and Protection Plan (SHOPP), a "fix-it-first" program that funds California highway repair and preservation.

All work is weather dependent. Please drive with caution. Thank you for your patience as we work to maintain our state's highways, bridges, and tunnels.

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

California Department of Transportation published this content on April 22, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on April 22, 2026 at 23:50 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]