Folder: S.F. Bridges-Golden Gate-Approaches-Funston Avenue.
Newscopy: "Through the Presidio is being driven the Park-Presidio-blvd approach to the Golden Gate Bridge. A major feature is this cut-and-fill tunnel-a novel arrangement in which a moveable section of steel bracing is slid along a tunnel gouged in the Presidio golf course, the tunnel being built over it. When a tunnel section is complete the bracing slides into a new position and the process is repeated."