Keywords: BayBridgeTowerComparison.jpg en Comparison of 1930 sketch of Bay Bridge tower versus 1935 construction photo of tower 5 as built Own Binksternet I put together this new original image which is a comparison of portions of two other images from different sources The left half is from a drawing included within the 234-page Hoover-Young Bay Bridge Commission Report a federal project which was completed in August 1930 and the right half is cropped and reduced from a 1935 construction photograph showing engineer Purcell and others standing on the pier of a tower to the west 2008-11-08 Public domain No restrictions on use San Francisco Bay Bridge - Western span Timothy L Pflueger Bridge towers |