BART trains are running on schedule this morning following a Sunday plagued by delays when an electrical fire temporarily closed BART's Transbay Tube and later caused major delays for train riders traveling under the Bay between Oakland and San Francisco.
Train service was restored overnight.
The brief fire broke out on tracks near the Oakland end of the Transbay Tube about 1:50 p.m., causing smoke and damaging electrical cables and equipment, the transit agency said.
BART shut down the Transbay Tube for about 30 minutes, and then restarted service by running trains on just one of the two tracks inside the tube.
The preliminary cause of the fire was mineral build up on insulation for BART's third rail, causing a flash over, BART spokesman Linton Johnson said.