Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
How the Bridge was Built Marker
Photographer: Barry Swackhamer
Taken: May 20, 2012
Caption: How the Bridge was Built Marker
Additional Description: Captions: Cross section of caisson; Hoist; Airlock; Scow for debris.
Submitted: January 27, 2013, by Barry Swackhamer of Brentwood, California.
Database Locator Identification Number: p232298
File Size: 2.699 Megabytes

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