California Park, California

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California Park is an unincorporated community in Marin County, California, United States, and a suburb of San Rafael. It lies north of San Quentin State Prison. Marin Sanitary Service is the largest tenant in the area.

The community is in ZIP code 94901 and area codes 415 and 628.

The Cal Park Hill Tunnel[edit]

Cal Park Hill Tunnel
South portal of Cal Park Hill Tunnel, November 2018.JPG
Southern portal of the Cal Park Hill Tunnel, November 2018
LocationCalifornia Park, California
Coordinates37°57′03″N 122°30′37″W / 37.950701°N 122.510368°W / 37.950701; -122.510368Coordinates: 37°57′03″N 122°30′37″W / 37.950701°N 122.510368°W / 37.950701; -122.510368
Statustesting for commuter rail service
pedestrian path open
StartCalifornia Park
Opened1884 (1884)
Closedca. 1960's
Reopened2010 (pedestrain path)
2019 (commuter rail)
OwnerSonoma–Marin Area Rail Transit
OperatorSonoma–Marin Area Rail Transit
Charactersingle bore parallel commuter rail/pedestrian pathway tunnel
Length1,106 feet (337 m)
No. of tracks1 (formerly 2)
Track gauge4 ft 8 12 in (1,435 mm) standard gauge

The Cal Park Hill Tunnel runs for 1,106 feet (337 m) through the hill to Larkspur.[1] It opened in 1884 and was a double-track train tunnel owned by Northwestern Pacific Railroad.[1] Train service stopped in the 1960s.[1] It is now owned by Sonoma–Marin Area Rail Transit (SMART).[1] After a $27 million project, jointly funded by SMART and Marin County, half of the tunnel reopened in December 10, 2010 as a bicycle and pedestrian path.[1] Sonoma–Marin Area Rail Transit uses the other half to connect the line from downtown San Rafael to the Larkspur Ferry Terminal.[1] Originally estimated to cost $4 million,[2] the tunnel was rehabilitated for pedestrian access at a cost of $28 million in 2010; additionally the rail line was extended from its temporary terminal at San Rafael Transit Center at a cost of $55.4 million.[3]


  1. ^ a b c d e f Whiting, Sam (December 8, 2010). "Marin bicyclists get San Rafael-Larkspur tunnel". San Francisco Chronicle. Retrieved 2 June 2013.
  2. ^ "Marin IJ Editorial: Cost is big obstacle for bike tunnel". Marin Independent Journal. 22 January 2017. Retrieved 7 June 2017.
  3. ^ Fracassa and Whiting (13 December 2019). "Sonoma-Marin train line debuts Larkspur Station and easier trips to and from city". San Francisco Chronicle. Retrieved 14 December 2019.

External links[edit]