March 3rd, 2023 – South San Francisco, CA 
On the weekends of March 4-5 and 11-12, Caltrain will be suspending rail service between San Francisco and Millbrae Stations to accommodate Caltrain Electrification construction and testing. Caltrain encourages riders to see how this change in service will affect their commute and to seek alternative transit options if they would better suit their transportation needs.
Limited bus service, known as a bus bridge, will be provided to Caltrain-dependent riders traveling to or from the affected area.
These will be the first of 31 weekends in 2023 in which service will be adjusted to accommodate construction and testing for electrified service, which is expected to launch passenger service in fall 2024.