Please contact the contributing institution for more information regarding the copyright status of this object.
Photographic reproductions of original (1912) photographs of the Parks Bar Bridge on State Highway 20 crossing the Yuba River near Smartsville, Yuba County. Example of the Thomas System of pre-cast, reinforced concrete, three-hinged arch bridges. Design and method of bridge construction was patented by William M. Thomas during his association with W. S. Post in their Los Angeles engineering firm of Thomas and Post. Original photographs located in Yuba County Library. View 48 (1994-0049). Placing deck reinforcement, view to north. CA-132-48 -- view 49 (1994-0050). Bridge nearing completion, view to north-northeast from near south abutment. CA-132-49 -- view 50 (1994-0051). Bridge nearing completion, pier 2 at right center, pier 1 at left center, north abutment at left; view to northeast. CA-132-50 --view 51 (1994-0052). Bridge nearing completion, note formwork for deck cantilever, south abutment; view to east. Note lack of connection to roadway at right. CA-132-51 --view 52 (1994-0053). Bridge nearing completion, view to north-northwest from south abutment. Note construction tent camp in background, and edge of bridge without connection to roadway in foreground. CA-132-52 --view 53 (1994-0054). Bridge nearing completion, view to northwest from near south abutment. CA-132-53 --view 54 (1994-0055). Bridge nearing completion, oblique view to downstream elevation; view to southeast. CA-132-54. Accompanied by: Parks Bar Bridge (Yuba River Bridge), California State Highway 20 spanning the Yuba River, Smarville vicinity, Yuba County, California : photographs, written historical and descriptive data. San Francisco, Calif. : Historic American Engineering Record, National Park Service, Western Region, Dept. of the Interior, 1993. Report prepared by Bonnie Wehle Parks. , 14 p. ; 28 cm. HAER No. CA-132.
Photographs. Nonprojected graphic
7 photographic prints ; 8 x 10 in.
Rivers--California, Northern Bridges--California--Yuba River Bridge construction--California--Yuba River Yuba River (Calif.)--Photographs Parks Bar Bridge (Yuba County, Calif.)--Photographs Photographic prints Aerial views
California, Northern California Yuba River Yuba River (Calif.) Parks Bar Bridge (Yuba County, Calif.)