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Item Title


Location
1 mile from County Route 4, Colfax vicinity, WA

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Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER WA-133
Unprocessed field note material exists for this structure (N192).
Building/structure dates: 1922 initial construction
Building/structure dates: 1928 subsequent work
Building/structure dates: 1967 subsequent work
Significance: A rare example of a wooden boxed-in Howe Truss bridge. The Great Northern Railway acquired the Spokane & Inland Empire Railway and had the bridge built according to a general plan (Great Northern Railway Plan No. 115-1562). The plan specified a 150' span, and three additional bridges of the same type were constructed along the line, which was a 37 mile branch line from Spring Valley, Washington, to Colfax, Washington. Previously used as an electric interurban railway by the Spokane & Inland Empire Railway, this spur line was upgraded to a steam line for freight use, hence the need for the heavy-timbered bridges. The Harpole Bridge is the only extant structure of its type in the State of Washington, and perhaps one of few remaining in the country.

Subjects
Railroad Bridges
Covered Bridges
Transportation


Related Names
Great Northern Railway
Lowe, Ruth
Spokane & Inland Empire Railway


Collection
Historic American Engineering Record (Library of Congress)

Contents


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