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Waldport

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Alsea Bay Bridge, Spanning Alsea Bay at Oregon Coast Highway, Waldport, Lincoln County, OR



B&W Photos

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Item Title


Location
Spanning Alsea Bay at Oregon Coast Highway, Waldport, OR

Find maps of Waldport, OR


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER OR-14
Unprocessed field note material exists for this structure (FN-5).
Building/structure dates: 1936 initial construction
Building/structure dates: 1991 demolished
Significance: The Alsea Bay Bridge was one of five large spans built along the Oregon Coast Highway between 1934 and 1936, of which C.B. McCullough oversaw the design and construction. The main spans of this 3,028-foot structure are three reinforced-concrete through tied arches. These arches are the largest of McCullough's reinforced-concrete tied arches in the state. Alsea Bay Bridge is the third largest of the five Oregon Coast Highway bridges. It is considered by some experts to rank among the finer examples of concrete bridges in America and may be the longest concrete span in North America. The bridge is significant for its impressive design and ornate detailing in the Art Deco style. Construction of a replacement bridge began in 1988, and was completed in 1991. The original structure was subsequently demolished.

Subjects
Concrete Arch Bridges
Vehicular Bridges


Related Names
McCollough, Conde B.


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. Perspective view from south
2. Perspective view from city park showing profile of old and new construction
3. Telephoto view of three main concrete arch spans from low tide mud flats
4. General view looking south showing both bridges from north shore of bay
5. General view of north abutment showing future approach roadway in foreground, Pacific Ocean in distance
6. General view from northwest
7. General view from beach, looking southeast
8. Telephoto perspective view of center span from north
9. Perspective view from north in late evening
10. South portal of three arch spans, looking north
11. Interior of north portal
12. Construction work apace at north pier of future bridge
13. Formwork for main channel piers
14. Art Deco endpost, looking west
15. Dismantling west railing on north approach to tied arches, looking southeast
16. Dismantling east railing, close-up view, looking west
17. Demolished south approach with tied arches in distance, looking north
18. Close-up view of three tied arches, looking northwest
19. Three tied arches with north approach in distance, looking northwest
20. Dismantling railings between old and new spans, looking south
21. Preparing a tied arch for demolition, looking southwest
22. Three tied arches of bridge prior to demolition, looking southeast
23. Explosion of charges on two of the three tied arches, looking southeast
24. Aftermath of explosion on two southern tied arches, looking southeast
25. North tied arch after demolition of other tied arches, looking north
26. South end of north tied arch, looking northwest
27. Hauling debris, looking south
28. Dismantling railing, looking north
29. Landfill for debris
30. Covering landfill of debris
31. General view prior to demolition
32. General view prior to demolition
33. General view prior to demolition
34. General view prior to demolition
35. General view prior to demolition
36. View of approach span
37. View of piers beneath approach span
38. View of piers beneath approach span
39. Historic view of bridge, ca.1936
GENERAL VIEW PRIOR TO DEMOLITION
GENERAL VIEW PRIOR TO DEMOLITION
GENERAL VIEW OF NORTH ABUTMENT SHOWING FUTURE APPROACH ROADWAY IN FOREGROUND, PACIFIC OCEAN IN DISTANCE
PERSPECTIVE VIEW FROM SOUTH
GENERAL VIEW LOOKING SOUTH SHOWING BOTH BRIDGES FROM NORTH SHORE OF BAY
GENERAL VIEW FROM NORTHWEST
PERSPECTIVE VIEW FROM NORTH IN LATE EVENING


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