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Springfield

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Hayden Bridge, Spanning McKenzie River at Southern Pacific Railro, Springfield, Lane County, OR



B&W Photos

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Data Pages


Drawings


Photo Caption Pages


Item Title


Location
Spanning McKenzie River at Southern Pacific Railro, Springfield, OR

Find maps of Springfield, OR


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER OR-19
Unprocessed field note material exists for this structure (FN-6).
Building/structure dates: 1882 initial construction
Building/structure dates: 1901 subsequent work
Building/structure dates: 1987 subsequent work
Significance: The Hayden Bridge incorporates two features that were milestones in the history of wrought iron bridge building: the Whipple-Murphy truss and the Phoenix column. / The Hayden Bridge was fabricated by Clarke, Reeves & Company, Phoenixville Bridge Works of Phoenixville, Pennsylvania in 1882. It was originally erected across the Bear River at Corrine, Utah by the Central Pacific Railroad, on the line that was part of the first Transcontinental Railroad. The bridge was dismantled and reassembled across the McKenzie River near Springfield, Oregon in 1901, as part of a logging spur line owned by the Southern Pacific Railroad. The 224 feet long wrought-iron span includes hollow "Phoenix Columns," an innovative fabrication design of the wrought-iron period of American bridge building. This feature was a staple of the Phoenixville Bridge Works. The span is a Double-Intersection Pratt Truss, also called a Whipple-Murphy Truss. In 1847, Squire Whipple patented his design for a Pratt Truss made of iron, with diagonal web members crossing two panel points. The Hayden Bridge is made of wrought-iron, except for the connections and ornamentation, which are cast-iron. Ornamental medallions are placed at the crossing of the diagonal portal bracings. Railroad brake-wheel designs decorate the corner portal brackets. A cast-iron nameplate atop the portal gives the full name of the Phoenixville Works.

Subjects
Railroad Bridges
Wrought-iron Truss Bridges


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. Eastern portal, looking west
2. Perspective view from southwest
3. View from western portal, looking east
4. Eastern portal from middle of span
5. Detail, interior view of eastern portal
6. Perspective view of whole span from southeast
7. Detail, lower chord pin connections
8. Detail, lower chord, looking west from southeastern abutment
9. Detail, lower chord from northeastern abutment
10. Detail, lower chord pin connections at central panel
11. Southwest abutment, fixed end
12. Southeast abutment, moveable end
13. Inclined endpost at southwest abutment
14. Same as OR-19-13, with measuring stick
15. Detail, underside from southeast


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