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Oregon

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Reedsport

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Umpqua River Bridge, Spanning Umpqua River at Oregon Coast Highway, Reedsport, Klamath County, OR



See 32 maps of this location


B&W Photos

HB997125

HB997126

HB997127

HB997128

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Item Title


Location
Spanning Umpqua River at Oregon Coast Highway, Reedsport, OR

Find maps of Reedsport, OR


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER OR-45
Unprocessed field note material exists for this structure (FN-28).
Significance: The Umpqua River Bridge is historically significant as one of the five Depression-era PWA bridges that connected the Oregon Coast Highway. The completion of these bridges is considered the dividing line between the period of relative isolation and dependence on sea transportation of Oregon's southern coastal region to its modern era of land transportation and connection with the hinterland. The Umpqua River Bridge is the only one of the five PWA coastal bridges to be constructed with a swing span. It is the longest swing span constructed in Oregon, and one of only a few left in the state. The bridge is also representative of the innovative designs by State Bridge Engineer Conde B. McCullough. McCullough was a pioneer in American concrete bridge design. The Umpqua River Bridge includes early examples of McCullough's use of tied, or bowstring arches, and concrete arches constructed using Considere-type hinges.

Subjects
Swing Bridges
Vehicular Bridges
Concrete Bridges


Related Names
Norman, James, Photographer


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. General view from west
2. Concrete arches on south side of swing span
3. View of approach spans from southwest
4. View of approach span, looking southeast
5. North portal, looking south
6. Roadway and concrete arch detail
7. Detail, formwork at south portal
8. Same as OR-45-7
9. Perspective view of swing span from southeast
10. Elevation from east
11. Detail, swing span steelwork from roadway
12. Steelwork, looking north from operator's house
13. Interior view of control room
14. View of turntable and drive motor
15. View of brakes and drive gear
16. South portal of main span, looking north
CONCRETE ARCHES ON SOUTH SIDE OF SWING SPAN
VIEW OF APPROACH SPAN, LOOKING SOUTHEAST


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