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West Multnomah Falls Viaduct

Photos 

West Multnomah Fall Viaduct

Photo taken by Michael Goff on January 10, 2009

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BH Photo #132295

Street Views 

Facts 

Overview
Bridge over rocky terrain along railroad tracks on Historic Columbia River Highway
Location
Multnomah County, Oregon
Status
Open to traffic
History
Built 1914
Builders
- Charles H. Purcell (Bridge Engineer)
- Karl P. Billner (Design Engineer)
- Pacific Bridge Co. of Portland, Oregon (Contractor)
Design
This 400' half-viaduct was an engineer's solution to aligning the Historical Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line right-of-way. It is a companion to the East Multnomah Falls Viaduct.
(HAER No. OR-36-J)
Dimensions
Length of largest span: 20.0 ft.
Total length: 401.9 ft.
Deck width: 17.4 ft.
Approximate latitude, longitude
+45.57639, -122.12028   (decimal degrees)
45°34'35" N, 122°07'13" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/568636/5047359 (zone/easting/northing)
Quadrangle map:
Multnomah Falls
Average daily traffic (as of 2016)
4,200
Inventory numbers
OR 00840 (Oregon Dept. of Transportation structure number)
BH 37536 (Bridgehunter.com ID)
Inspection report (as of September 2017)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 15.4 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 31, 2011: New photos from Michael Goff
  • September 8, 2010: New Street View added by Michael Goff
  • January 12, 2009: New photos from Michael Goff
  • October 7, 2008: Added by Michael Goff

Related Bridges 

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • Historic Highway Bridges of Oregon - Dwight A. Smith, James B. Norman & Pieter T. Dykman, Oregon Historical Society Press, 1989
  • HAER OR-36-G - Historic Columbia River Highway, West Multnomah Falls Viaduct, West of Multnomah Falls on Historic Columbia River Highway, Troutdale vicinity, Multnomah County, OR