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Clark Fork Railroad Bridge

Clark Fork Railroad Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 22, 2014

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Key Facts

Facility Carried / Feature Intersected
Railroad (Rail-Trail) Over Clark Fork River
Location
Clark Fork: Bonner County, Idaho: United States
Structure Type
Metal 8 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1920 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
200 Feet (61 Meters)
Structure Length
996 Feet (304 Meters)
Roadway Width
10.2 Feet (3.11 Meters)
Spans
4 Main Span(s) and 2 Approach Span(s)
NBI Number
20650

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

The community of Clarks Fork has an interesting history of bridges. At one time, there was a highway truss bridge which was the crossing cars used to get over the river. This bridge was documented by Historic American Engineering Record. The bridge was eventually closed to traffic, and traffic was rerouted to this bridge, which was an abandoned railroad truss bridge. The railroad truss bridge served as a vehicular truss bridge until the completion of a new highway bridge right next to the railroad truss bridge in 2003. At this point, the railroad truss bridge was converted for use by non-motorized traffic only. This is the function that the bridge retains today.

The bridge is an outstanding example of a multi-span railroad truss bridge. Despite its long history, the bridge superstructure retains good historic integrity with no major alterations. The bridge's heavy construction and relatively narrow roadway clearly convey the bridge's railroad origins.

To complicate the bridge story in this area, there is an additional, active railroad bridge nearby.

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Photo Galleries and Videos: Clark Fork Railroad Bridge

 
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Maps and Links: Clark Fork Railroad Bridge

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