Bus Bridge and Green Line Cancellation Alert: Free buses replace trains between Union City and Warm Springs/South Fremont May 11-12.

BART crews will be in the trackway between Union City and Warm Springs/South Fremont stations replacing aging equipment as well as managing vegetation that could impact service. To ensure a safe workspace for the team, there will be no train service between Union City and Warm Springs/South Fremont on Saturday May 11 and Sunday May 12. Instead, free buses provided by AC Transit will move riders between the Union City, Fremont, and Warm Springs/South Fremont stations. Riders can expect delays ranging from 20 to 40 minutes on the shutdown weekend of 5/11-12. The work will also require us to shut down the Green Line for the weekend.

The bus bridge will feature direct service between Union City and Warm Springs/South Fremont as well as hopper service that will also stop at Fremont Station. Fremont Station will offer no train service but will remain open for buses. 

There will be a train shuttle service between Warm Springs/South Fremont and Berryessa/North San Jose. Northbound departure times will be adjusted ten minutes earlier. The last two evening trips from Warm Springs/South Fremont normally scheduled for 11:36pm and 11:49pm will be cancelled. Riders should instead use the train that departs at 11:26pm. Northbound trains from Union City will be shifted six minutes earlier than the current schedule at Union City, South Hayward, and Hayward stations. Riders headed for San Francisco should plan to transfer to a Blue Line train at Bay Fair Station.

This upcoming work is part of BART’s overall effort to improve safety and reliability of the 131-mile, 50 station system. There are now more rebuilding projects happening across BART than at any point in its 50-year history. You can learn more about the progress of this work by reading the 2023 Measure RR Annual Report published by the independent Measure RR Bond Oversight Committee.

You can keep up with the latest updates for trackway repair projects that impact service by going to our Alerts and Advisories page.