Alsea Bay Bridge
|Alsea Bay Bridge|
The 1991 Alsea Bay Bridge
|Locale||near Waldport, Oregon|
|Design||concrete arch bridge (both)|
|Total length||3,011 feet (918 m) (1st)
2,910 feet (890 m) (2nd)
|Longest span||450 feet (140 m)|
|Clearance below||70 feet (21 m) (2nd)|
There have been two bridges on this site.
The hostile environment caused significant corrosion to the steel reinforcements. In 1972 the Oregon Department of Transportation began projects aimed at extending the life of the bridge. By the mid-1980s it was decided to replace the bridge rather than continuing costly rehabilitation efforts. The first bridge was demolished in 1991.
Construction of the second bridge, designed by HNTB, began in 1988, and it was opened in the fall of 1991 at a cost of $42.4 million. The bridge is 2,910 ft (890 m) in total length, with a 450 ft (140 m) main span that provides 70 ft (21 m). of vertical clearance. The bridge has a latex concrete deck and the piers are significantly thicker than normal in an attempt to thwart corrosion. Its life expectancy is 75 to 100 years.
- Jackson, Donald C. (1988). Great American Bridges and Dams. Wiley. p. 327.
- Alsea Bay Bridge (1936) at Structurae
- Alsea Bay Bridge (1991) at Structurae
- Alsea Bay Bridge Interpretive Center
- Survey number HAER OR-14 – Old Alsea Bay Bridge, Spanning Alsea Bay at Oregon Coast Highway, Waldport, Lincoln County, OR at the Historic American Engineering Record (HAER)
- New Alsea Bay Bridge, Spanning Alsea Bay at Oregon Coast Highway, Waldport vicinity, Lincoln, OR at HAER
- Alsea Bay Bridge Photo Gallery
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