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
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
USGS topographic map
OR 00841 (Oregon Dept. of Transportation structure number)
BH 37534 (Bridgehunter.com ID)
Inspection (as of 09/2011)
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: 13.2 (out of 100)
Average daily traffic (as of 2010)
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
Mike Goff - michael [dot] goff [at] hotmail [dot] com