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General Information

Beginning of works: 1988
Completion: 1991
Status: in use

Project Type

Structure: main bridge:
Through arch bridge
approach viaducts:
Rigid frame bridge with V-shaped legs
Function / usage: Road bridge
Material: main bridge:
Steel bridge
approach viaducts:
Concrete bridge

Location

Location: , , ,
Replaces: Alsea Bay Bridge (1936)
Coordinates: 44° 26' 5.75" N    124° 4' 25.68" W
Coordinates: 44° 25' 42.30" N    124° 4' 2.60" W
Show coordinates on a map

Technical Information

Dimensions

total length 750 m
clearance 21.34 m
arch height 27.43 m
span 137.16 m

Materials

arch steel
deck of approach viaducts prestressed concrete

Excerpt from Wikipedia

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 3,011 feet (918 m) long, reinforced-concrete combination deck and through arch bridge built in 1936.

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.

Text imported from Wikipedia article "Alsea Bay Bridge" and modified on 23 July 2019 under the CC-BY-SA 3.0 license.

Participants

Owner
Original design
Bridge engineering
Alternative design
Construction engineers
Erection engineering
Contractor

Relevant Web Sites

  • About this
    data sheet
  • Structure-ID
    20006865
  • Published on:
    14/11/2002
  • Last updated on:
    29/03/2020
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