San Francisco Tunnel Work

In June 2020, Caltrain completed work on the four train tunnels in San Francisco, paving the way for Caltrain Electrification and bringing the tracks to a state of good repair.

Electrification work included the installation of over 630 drop tubes and over six miles of overhead wire and conductor rail! Crews 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. 


San Francisco Caltrain Tunnels Map

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