Early morning commuters in the Bay Area experienced significant disruptions last Friday due to an outage in the BART network, attributed to complications during a scheduled upgrade. The outage began around 3:15 AM, as the BART operating technology network lost connectivity, particularly impacting San Francisco and the Peninsula. According to a service disruption update from BART, the problem occurred during the cutover to a new network switch at Montgomery St. Station, which is part of ongoing efforts to modernize the aging communications infrastructure.
As BART lines were suspended, the SF Bay Ferry swiftly increased their capacity to accommodate the high number of commuters left stranded; regular ferry schedules were maintained even as the company prepared to scale up their operations where needed. BART spokesperson Alicia Trost explained the routine nature of such maintenance work, telling 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."
The disruption highlights ongoing challenges in modernizing the Bay Area's transit infrastructure; BART confirmed that an issue was limited to SF and the Peninsula, taking several hours to restore East Bay service by around 9:30 AM, and full service did not resume until about 11:43 AM. Further investigations are underway to pinpoint the cause of the unexpected traffic that led to the loss of network stability. BART communicated the service interruption to the public starting before 5 a.m., utilizing text, email, social media, and alerts via the bart.gov site and BART app. Key individuals from the BART team were deployed to stations to help guide commuters toward alternate transportation options.
