Innovations in Marin County: The Baker-Barry Tunnel
This series is designed to introduce Marin County residents to some of the innovative bicycle and pedestrian facilities in our backyard.
Formerly a military tunnel connecting Fort Baker and Fort Cronkhite, the half-mile Baker-Barry Tunnel serves as an important gateway to the Marin Headlands (part of the greater Golden Gate National Recreation Area ).
The narrow tunnel has one lane for vehicles, but has bike lanes in both directions. It is closed to pedestrians. The traffic signal alternates every 5 minute to allow the opposing direction of vehicle traffic to proceed. Bikes may proceed at any time, and a flashing beacon can be activated by cyclists to warn motorists that there are bikes in the tunnel.
The tunnel gives cyclists a relatively level alternative to a hilly overland route, and provides access to features of the Golden Gate National Recreation Area such as the Point Bonita Lighthouse, the Marine Mammal Center, and Fort Cronkhite, as well as numerous family-friendly hiking routes. It is a popular recreational route for many Marin County cyclists and for visitors to the region. The Baker-Barry Tunnel can be reached from Alexander Avenue which connects with the Golden Gate Bridge to the south and Sausalito to the north (location map).
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