[Excavation for tunnel on Yerba Buena Island during San Francisco-Oakland Bay Bridge construction]

[]Details

Local identifier: AAD-2494
Title: [Excavation for tunnel on Yerba Buena Island during San Francisco-Oakland Bay Bridge construction]
Date: 1934 Aug. 31
Issuance: monographic
Collection: San Francisco Historical Photograph Collection
Type of Resource: still image
Physical Description: 1 photographic print: b&w.
Form: graphic
Use and Reproduction: Permission to use this image must be obtained from the San Francisco History Center, San Francisco Public Library.
Note: Folder: S.F. Bridges-Bay-Construction-Yerba Buena Tunnel.
Newscopy on duplicate: "A honeycomb of tunnels best describes the method being used by engineers for the San Francisco-Oakland bay bridge who are driving pilot bores from both sides of Yerba Buena island for the bridge tunnel, which, when complete, will be 75 feet wide, 67 feet high and 540 feet long."
Printed on back: "BORES FOR THE YERBA BUENA ISLAND TUNNEL FOR THE SAN FRANCISCO-OAKLAND BAY BRIDGE--This tunnel, according to Chief Engineer C.H. Purcell, without its lining of concrete, will be 78 feet wide by 67 feet high, and 540 feet long. The dotted line shows the final outline on of the tunnel."
LCSH Subjects: San Francisco (Calif.)--Photographs
San Francisco-Oakland Bay Bridge (Oakland and San Francisco, Calif.)
Yerba Buena Island (Calif.)
Tunnels--California
Keywords: Bridge construction
Bibliographic Number: .b10273153
Handle: http://hdl.handle.net/20.500.12352/islandora:142311