District: Four - Oakland
Contact: Alejandro Lopez
Phone: (510) 286-4948
Night Lane Closures Scheduled for Phase Two of the San Mateo 101 Express Lanes Project Lane closures from 9:00 PM to 5:30 AM
San Mateo – Starting February 11, 2020, Caltrans will begin nightly lane closures on U.S. 101 between Whipple Avenue in Redwood City and Interstate 380 (I-380) in South San Francisco. The closures will occur Sunday through Thursday nights beginning at 9:00 PM and ending at 5:30 AM.
Plan for Delays. Nightly lane closures may cause project-related freeway delays from 9 PM to 6:00 AM. Peak delays may occur from 9 PM to 1:30 AM, some in excess of 25 minutes. Delays more than 15 minutes are not anticipated between 1:30 AM. to 6:00 AM. Closures and delays will vary in magnitude, duration, and location, depending upon what work is being performed on a given night.
Travelers will be able to see real-time traffic conditions from changeable message signs placed in the construction zone. The Smart Traffic System is being implemented during construction to provide up to date information, improve safety, and reduce congestion in the corridor.
The project will create 22 miles of express lanes in each direction of U.S. 101 from the San Mateo County/Santa Clara County line to I-380. The San Mateo 101
Express Lanes will seamlessly connect to the express lanes being constructed in Santa Clara County.
To sign up for weekly or quarterly updates, email with the subject line 'Weekly' or 'Quarterly' to 101express@dot.ca.gov.
For real-time traffic, click-on Caltrans QuickMap: http://quickmap.dot.ca.gov/