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  5. San Mateo US-101 Pavement Rehabilitation & Median Barrier Upgrade Project

San Mateo US-101 Pavement Rehabilitation & Median Barrier Upgrade Project

Project Completed December 2025

Map showing the project limits of the San Mateo US-101 Pavement Rehabilitation & Median Barrier Upgrade Project. The project is located on US-101 in East Palo Alto, Menlo Park, and Redwood City, from Santa Clara/ San Mateo County line to 0.1 mile south of Whipple Avenue.

Project Summary

This State Highway Operation and Protection Plan (SHOPP) project rehabilitated the pavement of the mainline and upgrade the concrete median barrier on US-101. This project is located in East Palo Alto, Menlo Park, and Redwood City, from Santa Clara/San Mateo County line to 0.1 mile south of Whipple Avenue. This project extended the pavement service life and improve ride quality.

Work Description

This project proposes to rehabilitate the pavement from Santa Clara/San Mateo County line to 0.1 mile south of Whipple Avenue (Post Mile 0.0 to 6.5) on 101 throughout the NB and SB mainline. It upgraded the median barrier throughout the project limits, replaced loop detectors throughout the mainline, updated striping, installed rumble strips & stripes, and installed signs within the project limits.

Project Benefits

This project preserved, repaired, and extended the life of the existing pavement, improve ride quality, and optimize the performance of the transportation system for the movement of travelers and goods.

Project Contact

Jeneane Crawford
Public Information Officer - Caltrans District 4
Cell: 510.390.3253
Email: Jeneane.Crawford@dot.ca.gov
Page updated 12/16/25