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| The '''Sauvie Island Bridge''' crosses the ] near ], ]. This 1,500-foot-long steel truss bridge was built in 1950 and it is in the process of being replaced by a new bridge. | The '''Sauvie Island Bridge''' crosses the ] of the ] near ], ]. This 1,500-foot-long steel truss bridge was built in 1950 and it is in the process of being replaced by a new bridge. | ||
| ==Old bridge== | |||
| Opened on ] ], the first bridge to ] replaced the Sauvie Island Ferry.<ref name=pbb/> The $900,000 bridge was designed by the ] and built by Gilpin Construction.<ref name=pbb/> Oregon transfered ownership to the county in 1951.<ref name=pbb/> Comprised of three steel truss spans it is a total of 1,198 feet long, with the main span measuring 200 feet in length.<ref name=pbb/> The approach spans are built of reinforced concrete girders.<ref name=pbb/> Green in color, the bridge is 41 feet wide and carries two lanes of traffic and has sidewalks on both sides.<ref name=pbb/> The main span, which is a Parker through truss, sits 80 feet above the water line and handles 3,800 vehicles per day on average.<ref name=pbb/> | |||
| ==New bridge== | |||
| After cracks were found in the 1950 span in 2001, the owners (]) restricted weight and speed on the bridge.<ref name=pbb>Wortman, Sharon Wood, Ed Wortman, and James B. Norman. 2006. ''The Portland Bridge Book''. Portland, OR: Urban Adventure Press. ISBN 9780978736514. pp. 102-104.</ref> Early designs for a new bridge were submitted in July 2004, and groundbreaking was held on ] ].<ref name=pbb/> The new $38 million dollar span was designed by H2L2 Architecture with David Evans & Associates as the design engineers, and built by Max J. Kuney Company.<ref name=pbb/> Located at river mile three, the main span is 360 feet long and rests 80 feet above the water.<ref name=pbb/> The main span is of a tied-arch design constructed of steel, while the approach spans are a box-girder style using pre-stressed concrete.<ref name=pbb/> The bridge has two lanes of traffic with shoulders and sidewalks on both sides for a total width of 66 feet.<ref name=pbb/> | |||
| ==See also== | ==See also== | ||
| * ] | * ] | ||
| * ] | * ] | ||
| ==References== | |||
| {{Reflist}} | |||
| ] | ] | ||
Revision as of 18:26, 9 April 2008
Bridge in Multnomah Channel| Wapato Bridge | |
|---|---|
 | |
| Coordinates | 45°37′41″N 122°48′58″W / 45.628°N 122.816°W / 45.628; -122.816 |
| Carries | Access from U.S. Route 30 to Sauvie Island. |
| Crosses | Willamette River |
| Locale | Multnomah Channel |
| Official name | Sauvie Island Bridge |
| Characteristics | |
| Total length | 365 meters (1,198 feet) |
| Width | 8 meters (26 feet) |
| Longest span | 457.2 meters (1,500 feet) |
| History | |
| Opened | December 30, 1950 |
| Location | |
The Sauvie Island Bridge crosses the Multnomah Channel of the Willamette River near Portland, Oregon, United States. This 1,500-foot-long steel truss bridge was built in 1950 and it is in the process of being replaced by a new bridge.
Old bridge
Opened on December 30 1950, the first bridge to Sauvie Island replaced the Sauvie Island Ferry. The $900,000 bridge was designed by the State Highway Department and built by Gilpin Construction. Oregon transfered ownership to the county in 1951. Comprised of three steel truss spans it is a total of 1,198 feet long, with the main span measuring 200 feet in length. The approach spans are built of reinforced concrete girders. Green in color, the bridge is 41 feet wide and carries two lanes of traffic and has sidewalks on both sides. The main span, which is a Parker through truss, sits 80 feet above the water line and handles 3,800 vehicles per day on average.
New bridge
After cracks were found in the 1950 span in 2001, the owners (Multnomah County) restricted weight and speed on the bridge. Early designs for a new bridge were submitted in July 2004, and groundbreaking was held on January 4 2006. The new $38 million dollar span was designed by H2L2 Architecture with David Evans & Associates as the design engineers, and built by Max J. Kuney Company. Located at river mile three, the main span is 360 feet long and rests 80 feet above the water. The main span is of a tied-arch design constructed of steel, while the approach spans are a box-girder style using pre-stressed concrete. The bridge has two lanes of traffic with shoulders and sidewalks on both sides for a total width of 66 feet.
See also
References
- ^ Wortman, Sharon Wood, Ed Wortman, and James B. Norman. 2006. The Portland Bridge Book. Portland, OR: Urban Adventure Press. ISBN 9780978736514. pp. 102-104.
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