Muni Service Fully Restored Thursday

Aug. 3 - BCN -- San Francisco Municipal Railway spokesman Alan Siegel said Thursday morning that the cause of the train derailment in the Twin Peaks tunnel Wednesday, which resulted in Muni shutting down underground service between the Castro and West Portal stations all day, won't be available for several days.

"We're not speculating at all" about the cause, Siegel said. Muni reported early Wednesday that the derailment might have been triggered by debris falling from a train onto a stretch of track.

Full San Francisco Municipal Railway service "is back up and running through the Twin Peaks tunnel" without incident, Siegel said.

The derailment occurred between the Castro and Forest Hill stations just before 8 a.m. and put Muni lines K, L, and M out of service from Castro station to West Portal station for the rest of the service day, according to Siegel.

On Wednesday, some passengers were forced to board shuttle buses to get to their destinations after a morning L train derailment in the Twin Peaks tunnel that knocked out service.

Muni crews worked on the problem throughout the day, but service remained shut down between the Castro and West Portal stations during the evening commute.

Siegel said the derailment occurred around 7:50 a.m.

The cause of the derailment is still being looked at, said Siegel, and the investigation will continue "probably over a period of days."

No passengers on the derailed L train were injured, he said. They were safely transferred to another line to continue their trip.

This is the second Muni Metro train derailment in seven days.

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