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

Project Summary

This State Highway Operation and Protection Plan (SHOPP) project will rehabilitate 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 will extend 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 will also upgrade the median barrier throughout the project limits, replace loop detectors throughout the mainline, update striping, install rumble strips & stripes, and install signs within the project limits.

Project Benefits

This project will preserve, repair, and extend the life of the existing pavement, improve ride quality, and optimize the performance of the transportation system for the movement of travelers and goods.

Tentative Construction Schedule

Key Dates

Start Construction: May 2024
End Construction: Summer 2025

Nine Single Lane (#1 Lane) 55-Hour Weekend Closures (Tentatively June 2024 – Oct 2024):

During the 55-hour single lane closure, the #1 lane (lane closest to the median) in northbound & southbound directions will be closed - all other lanes will remain open. Nine single lane (#1 lane) 55-hour weekend closures will allow construction production rates to increase, greatly reducing the construction schedule and impacts to the traveling public. There will be no impact to the express lanes as the weekend closures are outside the operating hours of the express lanes. The maximum duration for the single lane closure will be for a period of 55 hours from 10:00 p.m., Friday night to 5:00 a.m., Monday morning for the construction of upgrading the median barrier. #2 lane will be closed at night as needed. All other work will be completed
during the nights in-between these weekend closures. Expect delays during the weekend closures. Alternative modes of transportation and alternative routes encouraged.

Project Contact

Alejandro Lopez
Caltrans Public Information Officer
Desk: 510-385-6856
Alejandro.Lopez@dot.ca.gov