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  5. Overnight Lane Closures on SR-1 between Moss Beach and Half Moon Bay Begin Monday December 1

Overnight Lane Closures on SR-1 between Moss Beach and Half Moon Bay Begin Monday December 1

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District 4 Caltrans Logo and Building California Logo

San Mateo County ― Caltrans has scheduled electrical and barrier placement work between Moss Beach and Half Moon Bay starting on Monday, December 1. Various right-hand lanes, turn pockets, and shoulders near intersections will be closed overnight beginning on Monday, December 1st and lasting 1-2 weeks from 6 p.m. to 6 a.m. while crews place temporary concrete barriers. (There will not be lane closures on Saturday or Sunday nights.) Traffic control personnel will be onsite to guide traffic and pedestrians through any affected areas.

Residents should expect some overnight noise while the heavy, temporary concrete barriers are placed on the roadway which will protect pedestrians and construction crews during construction.

Curb ramp and sidewalk work will take place between Moss Beach and Half Moon Bay starting on Monday, December 1 and last approximately 1-2 months. Curb ramps will meet Americans with Disabilities Act (ADA) standards, ensuring safe access while work is underway. Pedestrians will have access through or around the work areas.

Project Limits

Map showing the project limits on State Route 1 in San Mateo County. The project area extends between Marine Boulevard in Moss Beach and Wavecrest Road in Half Moon Bay.

Known as the SR-1 Multi-Asset Roadway Rehabilitation Project, the $46.7M project encompasses upgrading assets (such as pavement, guardrails, curbs, and crosswalks) that are nearing the end their service lives. Assets will be brought up to ADA standards, and Class II bike lanes will be added to both the north- and south-bound sides of the roadway. The project will continue through the summer of 2027.
To learn more, visit the project website.

This work is funded by the State Highway Operation and Protection Program (SHOPP). SHOPP is the State Highway System's “fix-it-first” program that funds the repair and preservation on the state's highway system.

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
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.