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Birch Creek Road Bridge

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Birch Creek Road Bridge

Photo taken by Michael Goff in September 2011

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Description 

The Birch Creek Road Bridge is a unique structure in that it is the only known all welded truss bridge in Oregon constructed prior to the 1960ís. The 110-foot bridge utilizes all welded connections throughout the truss members with no bolts or rivets used to connect the members. The bridge was fabricated by West Cost Steel Works of Portland, Oregon and is the only one of its type known to exist in the state or Oregon.

Facts 

Overview
Pratt pony truss bridge over Walla Walla River on Birch Creek Road
Location
Umatilla County, Oregon
Status
Open to traffic
History
Built 1956
Builder
- West Coast Steel Works (Fabricator)
Design
Welded Pratt pony truss
Dimensions
Length of largest span: 109.9 ft.
Total length: 111.9 ft.
Deck width: 21.7 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+45.97673, -118.37643   (decimal degrees)
45°58'36" N, 118°22'35" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/393375/5092382 (zone/easting/northing)
Quadrangle map:
Milton-Freewater
Inventory numbers
ORNBI 59C483055000006 (Oregon bridge number on the National Bridge Inventory)
BH 30141 (Bridgehunter.com ID)
Inspection (as of 08/2013)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Critical (2 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 10.9 (out of 100)
Average daily traffic (as of 2011)
893

Update Log 

  • April 3, 2013: New Street View added by Mike Goff

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com