East Multnomah Falls Viaduct

Map 

Vicinity map Map links: Google Maps Yahoo! Maps TopoZone Terraserver USA

Facts 

Overview

Bridge over Rocky terrain along railroad tracks on Historical Columbia River Highway

Location

Multnomah County, Oregon

Status

Open to traffic

History

Built 1914

Builders

- Karl P. Billner (Design Engineer)
- Pacific Bridge Co. (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)

Inventory number

BH 37534 (Bridgehunter.com ID)

Inspection (as of 08/2007)

Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 9.5 (out of 100)

Average daily traffic (as of 2004)

970

Categories 

Update Log 

• October 7, 2008: Added by Michael Goff

Sources 

• Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
• East Multnomah Falls Viaduct HAER Webpage

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