San Francisco Tunnel Work

From October 2018 to Spring 2019, Caltrain will perform 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. In order to accommodate the new electric trains, crews will create additional clearance and install anchor bolts in the tunnel ceilings to facilitate the installation of the overhead contact system that will power the new electric trains.

Crews will also perform work on the tunnel and tracks to ensure they are in a state of good repair. This includes stabilizing the track bed and improving tunnel drainage. The entrance to the southernmost tunnel will also undergo reconstruction.

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. Please visit the construction page for the latest weekly update.

San Francisco Caltrain Tunnels Map

Click Here to View Map

Curious about the construction activities?

Get weekly construction updates delivered right to your inbox.

Sign Me Up!