Updated, 1:15 p.m. Thursday: For what it's worth, here's BART's final update on Wednesday's terrible, horrible, no good, very bad day (i.e., the broken rail that snarled service most of the day):
Crews successfully made a permanent fix last night to the damaged rail in between Civic Center and 16th Street Stations. There have been no problems with the new track and trains operated at full speed all morning.
BART has sent the broken piece of rail to a specialist for lab testing to help determine why it broke. The rail was not original rail from when the system was first built. It had been replaced in early 2011.
We want to once again apologize for the inconvenience this caused our passengers and we are thankful for the quick action of our crews who got the rail fixed before the evening commute. Safety is our top priority.
There will be no interviews today as there is nothing new to report beyond this information and what was shared yesterday.
Updated, 4:43 p.m. Wednesday: BART is back up and running, though some crowding continues in Market Street stations.