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Jugtown Road Bridge

Jugtown Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: December 13, 2012

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Key Facts

Facility Carried / Feature Intersected
Jugtown Road (TR-172) Over East Fork Mazon River
Rural: Grundy County, Illinois: United States
Construction Date and Builder / Engineer
1884 By Builder/Contractor: P. E. Lane of Chicago, Illinois

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
170 Feet (51.8 Meters)
Structure Length
172 Feet (52.4 Meters)
Roadway Width
13.8 Feet (4.21 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

Additional Information: This bridge may have been built by P.E. Lane of Chicago, Illinois based on the design of the portal bracing and the fact that it is located in Illinois. However this is not proven and is only an estimate.

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

This is a highly significant historic bridge. With a clear span length of 170 feet, this bridge is an extremely long span example of a pin-connected Pratt truss. Spans of this length were more often configured as double-intersection Pratt (Whipple) truss spans, but this bridge maintains a single intersection Pratt design. With an 1884 construction date, this is also an early surviving example of a pin-connected truss bridge. The bridge is also noted for its lack of alteration. There are little alterations to the bridge. The most obvious alteration was some bolted repairs to one damaged vertical member. The bridge appears to be wrought iron. Frustratingly, the builder of this bridge is unknown.

The bridge is closed to traffic but from a restoration viewpoint, is in good condition and could easily be restored. Even in its current unrestored condition, the bridge does not appear to be at risk for collapse. Overall, there is little deterioration on the bridge. In particular, there is hardly any section loss on the members at the bottom chord connections, which is a traditional location for the worst deterioration on a truss bridge.


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