San Francisco Tunnel Work

Caltrain is performing work on the four train tunnels in San Francisco to pave the way for Caltrain Electrification and to bring the tracks to a state of good repair. Work is expected to be complete in June 2020.

On March 29, Caltrain completed the last of the weekend service shutdowns needed for electrification work which includes the installation of over 630 drop tubes and over six miles of overhead wire and conductor rail! Crews have also completed track and drainage work in the tunnels to ensure the system is in a state of good repair. To see photos of this and other work, please visit the Gallery Page. 

Due to the nature of the construction, there may be temporary, localized noise impacts during construction activities. Crews will be working around the clock on weekends and during the night on weekdays.

San Francisco Caltrain Tunnels Map


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