Rating:
6 votes

Ross Island Bridge

Photos 

Ross Island Bridge

Photo taken by Michael Goff on July 6, 2008

Enlarge

BH Photo #116650

Map 

Street View 

Facts 

Overview
Cantilevered steel arch bridge over Willamette River on US 26 in Portland
Location
Portland, Multnomah County, Oregon
Status
Open to traffic
History
Built 1926; rehabilitated 2000-01
Builders
- American Bridge Co. of New York (Steel Fabricator)
- Booth & Pomeroy, Inc. of Portland, Oregon (Steel Erector)
- Gustav Lindenthal of Brno, Cisleithania, Austro-Hungarian Empire (Now known as Brno, South Moravia, Czech Republic) (Engineer)
- Lindstrom & Feigenson of Portland, Oregon (Contractor Approach Spans)
Design
Cantilevered steel arch
Dimensions
Length of largest span: 535.0 ft.
Total length: 3,649.1 ft. (0.7 mi.)
Deck width: 43.0 ft.
Vertical clearance above deck: 41.5 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+45.50126, -122.66454   (decimal degrees)
45°30'05" N, 122°39'52" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/526207/5038690 (zone/easting/northing)
Quadrangle map:
Portland
Inventory numbers
OR 05054 (Oregon Dept. of Transportation structure number)
BH 29899 (Bridgehunter.com ID)
Inspection (as of 06/2015)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 32.4 (out of 100)
Average daily traffic (as of 2014)
50,600

Update Log 

  • October 5, 2016: New photos from Mike Garland
  • October 19, 2014: New photos from Royce and Bobette Haley
  • April 13, 2010: New Street View added by James Baughn
  • March 5, 2010: Posted HAER photos
  • May 11, 2009: New photos from Michael Goff
  • July 8, 2008: Updated by Michael Goff
  • July 7, 2008: New photos from Michael Goff
  • June 7, 2008: Changed name, corrected county

Related Bridges 

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • Wikipedia
  • HAER OR-102 - Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Portland, Multnomah County, OR
  • Historic Highway Bridges of Oregon - Dwight A. Smith, James B. Norman & Pieter T. Dykman, Oregon Historical Society Press, 1989
  • Bridges of Portland - Ray Bottenberg, Arcadia Publishing, 2007
  • The Portland Bridge Book - Sharon Wood Wortman, Oregon Historical Society Press, 2001
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com
  • Mike Garland - Rapier342 [at] comcast [dot] net