Daytime and Overnight Lane & Ramp Closures Scheduled on U.S. 101 in San Mateo County

San Mateo County ― Caltrans has scheduled intermittent ramp and lane closures of U.S. 101 in San Mateo County so that crews can repair guardrails, upgrade curb ramps to Americans with Disabilities Act standards, and perform paving operations.

Daytime Ramp Closures
Partial ramp closures during the day are scheduled between Embarcadero Rd. in East Palo Alto and South Airport Blvd. in South San Francisco from 7 a.m. - 5 p.m. Drivers should expect minor delays. Work will be carried out from:

• Thursday, April 30 - Friday, May 29

Nighttime Lane Closures
The northbound right lanes (sometimes called "slow lanes") of U.S. 101 between Whipple Ave. in Redwood City and Broadway Ave. in Burlingame will be closed intermittently between 9 p.m. and 5 a.m. Please follow posted detour signs. 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

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 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
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Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.