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Revision as of 18:08, 21 June 2009 by Tedder (talk | contribs) (→New bridge: add sources, refine information.)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Bridge in Multnomah Channel
Sauvie Island Bridge
New Sauvie Island Bridge, June 2009
Coordinates45°37′41″N 122°48′58″W / 45.628°N 122.816°W / 45.628; -122.816
CarriesAccess from U.S. Route 30 to Sauvie Island
CrossesWillamette River
LocaleMultnomah Channel
Characteristics
Total length365 meters (1,198 feet)
Width8 meters (26 feet)
Longest span457.2 meters (1,500 feet)
History
OpenedDecember 30, 1950
Location

The Sauvie Island Bridge crosses the Multnomah Channel of the Willamette River near Portland, Oregon, United States. The steel truss bridge, which is 1,500 feet (460 m) long, was built in 1950. It is currently 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 Oregon Department of Transportation and built by Gilpin Construction. Oregon transferred ownership to Multnomah County in 1951. Composed of three steel truss spans, it was a total of 1,198 feet long, with the main span measuring 200 feet in length. The approach spans were built of reinforced concrete girders. Green in color, the bridge was 41 feet wide and carried two lanes of traffic and had sidewalks on both sides. The main span, a Parker truss, sat 80 feet above the water line and handled an average of 3,800 vehicles per day.

New bridge

Old and new bridges, March 2008

After cracks were found in the 1950 span in 2001, 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 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. The bridge was floated into place after it was constructed.

In March, 2006, then-city commissioner Sam Adams proposed reusing the Sauvie Island bridge span as a bicycle/pedestrian bridge over Interstate 405 in downtown Portland, as part of the Burnside/Couch Transportation and Urban Design Plan. A coalition of Portland community groups including the Pearl District Neighborhood Association and the Bicycle Transportation Alliance have supported the idea. Adams ultimately retracted the proposal, realizing the cost would likely be more than the $5.5 million he had originally stated.

The $43 million new bridge opened June 23, 2008, and the old bridge was removed in August 2008.

See also

References

  1. ^ Wortman, Sharon Wood, Ed Wortman, and James B. Norman. 2006. The Portland Bridge Book. Portland, OR: Urban Adventure Press. ISBN 9780978736514. pp. 102-104.
  2. RIVERA, DYLAN (08 October 2008). "Bridge design is key". The Oregonian. {{cite news}}: |access-date= requires |url= (help); Check date values in: |date= (help)
  3. http://www.oregon.gov/ODOT/HWY/OTIA/news_HFL_event_1108.shtml
  4. "Is the Sauvie Island Bridge Worth Saving?", CommissionerSam.com
  5. "Pearl wants Sauvie Bridge" by Andy Giegerich, Portland Business Journal, July 20, 2007
  6. GRIFFIN, ANNA (25 May 2008). "Making Portland be all it can be". The Oregonian. {{cite news}}: |access-date= requires |url= (help)
  7. Maus, Jonathan. ""With a heavy heart" Adams explains Sauvie decision". BikePortland.org.
  8. http://www.djcoregon.com/articleDetail.htm/2008/06/24/Sauvie-Bridge-opens-to-traffic-Demolition-expected-to-start-soon-on-old-bridge-which-will-be-scrappe
  9. Tucker, Libby (18 August 2008). "Adios to Oregon's old Sauvie Island Bridge". Daily Journal of Commerce. Retrieved 2009-06-21.

External links

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