Salt River Bridge, Spanning Salt River at Dillon Road, Ferndale, Humboldt County, CA
Photo Caption Pages
Spanning Salt River at Dillon Road, Ferndale vicinity, CA
Find maps of Ferndale, CA
Documentation compiled after 1968.
Survey number HAER CA-126
Building/structure dates: 1919 initial construction
Significance: The Salt River Bridge, also known as the Valley Flower Bridge, determined eligible for inclusion in the National Register of Historic Places in 1987, represents a major example of the work of a significant designer. When built in 1919, this was recognized as the world's longest reinforced concrete girder bridge, whose 142-foot spans were nearly twice as long as the previous longest concrete bridge girders.
Brunnier, H. J.
Historic American Engineering Record (Library of Congress)
1. Contextual view of bridge in setting, from downstream, view to southwest along Port Kenyon Road. South end of bridge at left.
2. Contextual view of bridge in setting, from north end of bridge, view to north along Dillon Road. Former Valley Flower Creamery at right center.
3. Contextual view of bridge in setting, view to south along Dillon Road. Former Valley Flower Creamery at left.
4. Centerline view of bridge. View to northeast from intersection of Port Kenyon Road and Dillon Road. Former Valley Flower Creamery in background center. Note extremely heavy foliage on both sides of bridge.
5. Downstream elevation, view to southeast. Dark stains on side of main girder are from deck drain scuppers, marking deck level within the girders. Compare this view and CA-126-7 to CA-126-19 for indication of severity of siltation of Salt River channel has silted.
6. Centerline view of bridge, view to southwest.
7. Upstream elevation, view to northeast.
8. Detail, upstream endpost and abutment wingwall at south end of bridge, view to northwest.
9. Detail, south abutment, view to southwest along centerline from beneath bridge.
10. Underside of bridge, view to northeast along centerline from south abutment, center pier in background. Note transverse floor beams, intermediate stringers, depth of main girders.
11. Detail, center pier. View to north along centerline.
12. Underside of bridge, view to southwest along centerline from north abutment.
13. Detail, north abutment, view to northeast along centerline from beneath bridge.
14. Detail, upstream side of north abutment, showing main girder seat. 15. 'Concrete Bridge Over Salt River, Port Kenyon, Humboldt County, California, A.J. Logan, County Surveyor, H.J. Brunnier, Consulting Engineer, March 7, 1919,' showing general plan, plan of top chord, elevation of main girder, transverse section, plan section at deck level. 16. 'Concrete Bridge Over Salt River, Port Kenyon, Humboldt County, California, A.J. Logan, County Surveyor, H.J. Brunnier, Consulting Engineer, March 7, 1919,' showing detail of floor beam at central pier, half section of cantilever slab at end of bridge, floor beam end panels, slab reinforcing, plan of slab reinforcing, diagram of slab bars, typical floor girder. 17. 'Concrete Bridge Over Salt River, ...
19. Downstream elevation of bridge. Original photograph published in The Architect and Engineer, July 1920, p.90, photographer unknown. Note width of channel, and compare to CA-126-5 and CA-126-7.
20. San Francisco-Oakland Bay Bridge contract recipients, April 28, 1933, photographer unknown. Standing, left to right: Edward J. Schneider, Columbia Steel Corporation; C.C. Horton, Healy-Tibbitts Construction Company; Henry J. Kaiser, Bridge Builders, Inc.; Albert Huber, Clinton Construction Company; Allan McDonald, Transbay Construction Company; C.C. Carleton, Chief, Division of Contracts and Rights of Way, California Department of Public Works. Seated, left to right: Henry J. Brunnier, Consulting Engineer, Member of Consulting Board, San Francisco-Oakland Bay Bridge; Charles E. Andrew, Bridge Engineer, San Francisco-Oakland Bay Bridge; Earl Lee Kelly, Director, California Department of Public Works; Harrison S. Robinson, President, Financial ...
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