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Turtleville Iron Bridge

Lathers Road Bridge

Turtleville Iron Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: June 30, 2009

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Key Facts

Facility Carried / Feature Intersected
Lathers Road Over Turtle Creek
Rural: Rock County, Wisconsin: United States
Construction Date and Builder / Engineer
1887 By Builder/Contractor: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
141 Feet (43.1 Meters)
Structure Length
147 Feet (44.9 Meters)
Roadway Width
14.1 Feet (4.3 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

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

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

This bridge is a significant and relatively early example of a pin-connected highway truss built by an important Wisconsin bridge builder, the Wisconsin Bridge and Iron Company. In 1870, the company was formed with the label Weinhagen Brothers, Engineers. In 1880, the familiar name that would live on into the 20th Century was put in place, Wisconsin Bridge and Iron Company. While largely a regional company, their work, especially into the first half of the 20th Century extended to a more national level. The company became one of the largest fabricators of structural steel in the state. After well over a century of operation, the company was ended in 1983.

The Lathers Road Bridge, which is  16.2 feet wide, contains eight panels, and is 147.3 feet long, is a fairly long example of a single-span pin-connected Pratt truss. Its length results in higher trusses with more extensive sway bracing than are present on the average length Pratts of this period. The bridge retains good historic integrity. The replacement of the wooden deck with a metal grate in the 1970s is not a significant detriment because it did not alter the truss itself.

This bridge was apparently slated for demolition back in 1984. Obviously, someone at that time saw the good sense in canceling those plans and instead the bridge appears to have been rehabilitated. It is strongly hoped that the preservation commitment to this bridge will remain strong in the years ahead, in the form of continuing maintenance and rehabilitation as needed.


Photo Galleries and Videos: Turtleville Iron Bridge

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