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Iroquois 1500 Bridge

TR-168 Bridge

Iroquois 1500 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 13, 2006

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Key Facts

Facility Carried / Feature Intersected
Iroquois 1500 Over Whiskey Creek
Location
Rural: Iroquois County, Illinois: United States
Construction Date and Builder / Engineer
1929 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
70 Feet (21 Meters)
Structure Length
77 Feet (23 Meters)
Roadway Width
16.7 Feet (5.09 Meters)
Spans
1 Main Span(s)
NBI Number
38414209105

Historic Significance Rating (HSR)

Bridge Documentation

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

With a 1929 construction date, this is one of a few examples of later era truss bridges in Iroquois County. The first thing that stands out about this bridge is its skew. Skew typically is less noticeable with pony trusses as opposed to through trusses, but this bridge is so heavily skewed (60 degrees) that even as a pony truss it clearly shows. This bridge is a four panel Pratt pony truss with riveted connections. At 77 feet long, this bridge is a rather long bridge for only having four panels. Four is actually the smallest number of panels a full-slope Pratt truss can have.

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Photo Galleries and Videos: Iroquois 1500 Bridge

 
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A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: Iroquois 1500 Bridge

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