Single Tracking Alert: Service reduced to only one track in the Transbay Tube for critical lighting work (next work day 9/19/26)

BART crews will be in the Transbay Tube to replace lights in the tube. The work will next happen on Saturday, September 19 at 10pm and continue through the end of service that night.

The work will reduce our normal service from two tracks to one. Service impacts include:

• Trains will run every 30 minutes systemwide
• Only 3 lines will be in service (Blue, Yellow, Orange)
• Red and Green Line service will not operate
• A Yellow Line shuttle train will run between SFO and Millbrae all day - Passengers traveling beyond SFO must transfer

Work to replace lights in the tube will also happen on Saturday, November 21 from 10pm through the close of service that night and all day on Sunday, December 6. Crews did similar work on three previous Sundays in April, June, and July.

BART's Trip Planner will be updated to reflect schedule changes for these days. Riders are strongly encouraged to plan their trips in advance.

(This article was originally published on 3/30/26.)