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Ione Bridge

Ione Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 20, 2014

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Key Facts

Facility Carried / Feature Intersected
CR-93250 (NF-9354) Over Pend Oreille River
Location
Ione: Pend Oreille County, Washington: United States
Structure Type
Metal Cantilever 14 Panel Rivet-Connected Pratt Deck Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1932 By Builder/Contractor: Unknown and Engineer/Design: H. A. Sewell of Newport, Washington

Technical Facts

Rehabilitation Date
1967
Main Span Length
273 Feet (83 Meters)
Structure Length
830 Feet (253 Meters)
Roadway Width
26 Feet (7.92 Meters)
Spans
3 Main Span(s) and 12 Approach Span(s)
NBI Number
80387

Historic Significance Rating (HSR)

Bridge Documentation

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

View Historic Structure Reports For This Bridge

This bridge is among the oldest known examples of a cantilever deck truss bridge in Washington State. It is also located in a county and region that has relatively few historic truss bridges. Fortunately, the bridge has been rehabilitated and preserved and remains in excellent condition today. The original railings do not remain on the bridge. The bridge does have one major alteration: the approach spans, which were originally timber, have been replaced with unusual, modern welded two panel trusses supported on non-original substructure. In contrast, the historically significant cantilever truss main spans remain largely unaltered and have good historic integrity. The remaining approach spans are wooden stringer spans.

The cantilever truss is configured with a four panel suspended span in the center. Pins at the associated top and bottom chord connection points to the cantilever arms denote where the ends of the suspended span are located.

The bridge cost $75,000 to construct.

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Maps and Links: Ione Bridge

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