Today’s San Francisco Line commute went sideways after an obstruction on the tracks between San Bruno and South San Francisco triggered a major delay, forcing BART trains to hold and reroute. Service toward SFO, Millbrae and the East Bay took the hit, with riders stuck on platforms, missing connections and watching their airport buffers evaporate while crews worked to clear the trouble spot.
Obstruction Between San Bruno And South San Francisco
BART’s automated alert reported that the obstruction was located on the track between San Bruno and South San Francisco stations and labeled the situation a “major delay” affecting trains headed to SFO, Millbrae and East Bay destinations, according to BART Alert. The initial notice offered no estimate for when full service would be restored, instead warning riders to plan for significantly longer travel times.
There is a major delay on the San Francisco Line in the SFO, Millbrae and East Bay directions due to an obstruction on the track between San Bruno and South San Francisco Station.
— BART Alert (@SFBARTalert) June 25, 2026
Airport Riders And Peninsula Service Hit Hardest
Real-time tracking tools quickly backed up the alert, showing cascading delays along the airport corridor as the incident unfolded, according to live updates on NextBART. Those trackers showed trains being held in place or sent through the peninsula segment on a single track while crews dealt with the obstruction.
Options For Getting To SFO…