SAN FRANCISCO (KRON) — BART service fully resumed shortly before noon on Friday after a computer issue halted all trains for seven hours, including the morning commute.
The systemwide suspension in service was due to a computer equipment problem that followed a network upgrade, according to the Bay Area Rapid Transit District. Officials announced the issue at 5 a.m. on social media.
“We do maintenance every night, whether it’s preventative maintenance or upgrading systems, doing software upgrades, doing track work,” BART spokesperson Alicia Trost told KRON4. “So every night this work happens and typically everything works fine and we’re able to get the service up and running. But this morning, we knew at around 4:30 a.m. that things were not working as usual from the operations control center.”
Riders were earlier advised to seek alternative forms of transportation as service across all lines was suspended. Limited service began in the East Bay around 9:30 a.m.
Signs are posted outside of BART faregates during a systemwide shutdown on Friday, September 5, 2025. (Photo: Will Tran)
SF Bay Ferry added at least one additional trip from Oakland to Downtown SF amid the disruption.
The shutdown comes four months after BART’s last systemwide outage on May 9. On that day, all lines across the Bay Area were offline from the regular start of service until around 9 a.m. The root cause of the issue was later determined by the agency to be related to some of its network devices, which impacted the control center’s ability to monitor the activity of trains on the tracks.
This is a developing story. Check back for updates.
Ryan Mense
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