West Multnomah Falls Viaduct

Photos

West Multnomah Fall Viaduct

Photo taken by Michael Goff on January 10, 2009

BH Photo #132295

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

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