Rating:
No votes cast

East Multnomah Falls Viaduct

Share:

Photos 

East Multnomah Falls Viaduct

Photo taken by Michael Goff in June 2011

Enlarge

Map 

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 860' half-viaduct was an engineer's solution to aligning the Historic 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 West Multnomah Falls Viaduct
HAER No. OR-36-G
Dimensions
Length of largest span: 9.8 ft.
Total length: 860.9 ft.
Deck width: 17.4 ft.
Approximate latitude, longitude
+45.57861, -122.11333   (decimal degrees)
45°34'43" N, 122°06'48" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/569175/5047612 (zone/easting/northing)
Quadrangle map:
Multnomah Falls
Inventory numbers
OR 00841 (Oregon Dept. of Transportation structure number)
BH 37534 (Bridgehunter.com ID)
Inspection (as of 09/2015)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 28.2 (out of 100)
Average daily traffic (as of 2014)
3,600

Update Log 

  • July 5, 2011: New photos from Michael Goff
  • September 8, 2010: New Street View added by Michael Goff
  • April 20, 2009: Posted HAER photos
  • October 7, 2008: Added by Michael Goff

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-J - Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale vicinity, Multnomah County, OR