Английская Википедия:Alsea Bay Bridge

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Шаблон:Use mdy dates Шаблон:Infobox Bridge

The Alsea Bay Bridge is a concrete arch bridge that spans the Alsea Bay on U.S. Route 101 (US 101) near Waldport, Oregon.

History

There have been two bridges on this site.

The first bridge was designed by Conde McCullough and opened in 1936. It was a Шаблон:Convert long, reinforced-concrete combination deck and through arch bridge.

Файл:Alsea Bay Bridge at Low Tide.jpg
The bridge in March 2015

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.[1] 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 Шаблон:Convert in total length, with a Шаблон:Convert main span that provides Шаблон:Convert 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.

Файл:Alsea Bay Bridge at Waldport, Oregon (3387225849).jpg
The original Alsea Bay Bridge

See also

References

Шаблон:Reflist

External links

Шаблон:Authority control


Шаблон:Oregon-bridge-struct-stub Шаблон:UShighway-stub

Партнерские ресурсы
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Разное

  1. ↑ Шаблон:Cite book
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Alsea_Bay_Bridge&oldid=13088604