Caltrans has scheduled nightly full ramp closures at the Highway 92/U.S. 101 interchange in San Mateo from Sunday, Oct. 25, through Friday, Oct. 30, so crews can replace asphalt and install drainage.
Closed ramps and hours
- Westbound 92 loop to southbound 101: Monday–Thursday 9 p.m. to 5 a.m.; Friday 10 p.m. to 7 a.m. Detour via Delaware Street, Concar Drive and eastbound 92.
- Northbound 101 off-ramp to E. Hillsdale Blvd.: Sunday 8 p.m. to 7 a.m.; Monday–Thursday 10 p.m. to 7 a.m.; Friday 10 p.m. to 9 a.m. Detour via eastbound 92 and Edgewater Boulevard.
- Fashion Island Blvd. on-ramp to southbound 101: Sunday–Thursday 7 p.m. to 6 a.m.; Friday 7 p.m. to 8 a.m. Detours via Baker Way or 19th Avenue.
The bigger project
The work is part of the $45 million U.S. 101–SR 92 Short-term Improvements Project, co-sponsored by the San Mateo County Transportation Authority and C/CAG, Caltrans said. According to the SMCTA, the project will make room for truck turns on the loop connector, lengthen merge space toward eastbound 92 and add space on the Hillsdale off-ramp. Construction runs from spring 2025 through summer 2028.
All work is weather dependent. Real-time info is on 511.org and Caltrans QuickMap.