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Description
Set of 108 photographs of Tower Bridge, part of project HAER No. CA-73. Views 19-26 were done for project in 1985 by Don Tateishi, views 27-33 are reproductions of original plans and views 34 - 36 are architectural renderings done by architect Alfred Eichler. Includes index: Photographs, written historical and descriptive data / report prepared by John W. Snyder, James Fisher. Photographer, Don Tateishi. Sacramento River Bridge, also known as Tower Bridge and M Street Bridge (earlier bridge). Represents rare use of Streamlined Moderne architectural styling in lift bridge, major link in transcontinental highway U.S. 40. Added to National Register of Historic Places in 1985. Engineer/architect was Alfred Eichler, California Division of Highways. Built in 1934-36 to replace M Street Bridge. Bridge is steel through truss vertical lift span, and steel through truss and reinforced concrete and steel plate deck girder approadch spans. View 19 (1992-0298). CA-73-19. Shows lift cables on inside of Yolo County tower. Walkway down to river and pier visible in background -- view 20 (1992-0299). CA-73-20. Shows inside with electric motor with reduction gear housing at right, Waukesha auxiliary drive motor on left, emergency generator -- view 21 (1992-0300). CA-73-21. Shows transmission attached to reduction gear housing, two main electric drive motors -- view 22 (1992-0301). CA-73-22. Shows controller panel, emergency hand brake, reduction gear housing, main pulley shft, lift span indicator -- view 23 (1992-0302). CA-73-23. Shows emergency generator and main transmission -- view 24 (1992-0303). CA-73-24. Shows main transmission, Waukesha auxiliary drive motor, main electric drive motor -- view 25 (1992-0304). CA-73-25. Shows transformer room, transformers and knife switches -- view 26 (1992-0305). CA-73-26. Shows oil-filled transformer pots -- view 27 (1992-0306). CA-73-27. General plan, April 26, 1934 -- view 28 (1992-0307). CA-73-28. Tower Design no. 11 adapted from no. 9 -- view 29 (1992-0308). CA-73-29. Lamp standard on concrete parapet, April 14, 1934 -- view 30 (1992-0309). CA-73-30. Detail of lamp standard, Feb. 15, 1934. View 31 (1992-0310). CA-73-31. Lamp standard, detail of upper part, April 2, 1934 -- view 32 (1992-0311). CA-73-32. Watchman's shelter, March 28, 1934 -- view 33 (1992-0312). CA-73-33. Railing, Feb. 6, 1934 -- view 34 (1992-0313). CA-73-34. Alternate design using battered and unsheathed lift towers -- view 35 (1992-0314). CA-73-35. Alternate design using through arch spans, ashlar masonry walls and pylons, 1934 -- view 36 (1992-0315). CA-73-36. Alternate design using through arch spans, 1934.
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