Dunnville Bridge

Photos 

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Southeast Side, Looking West Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Southeast Side, Looking Northwest Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Northwest Side, Looking Southeast Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Northeast Approach, Looking Southwest Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Southwest Approach, Looking Northeast Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Interior Of Span, Looking Northeast Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Detail Of Upper Chord Intersection With Verticals, Diagonals, Sway Bracing And Lateral Bracing; Looking North Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Southwest Abutment And Rocker Bearings, Looking West Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Underside Of Deck, Looking Northeast Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Bridge Plate On South Endpost, Looking East Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

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Stone Foundation At Dunnville Village Site Northeast Of Bridge, Looking South Photo taken by Jerry Mathiason, April 1996 for HAER View photos at Library of Congress

Map 

Vicinity map Map links: Google Maps Yahoo! Maps TopoZone Terraserver USA

The Significance of the Dunnville Bridge 

The Dunnville Bridge is an excellent example of a steel, Warren overhead truss with verticals. It is among the earliest examples of the Wisconsin Highway Department's use of this design; previously, the agency had employed Pratt and Parker trusses for overhead spans. While a number of Warren truss bridges were subsequently built, less than three dozen examples of this type now survive in the state. The Dunnville Bridge was built by the Worden-Allen Company of Milwaukee, one of the most prolific Wisconsin bridge builders in the early decades of the twentieth century.

Facts 

Overview

Lost subdivided Warren through truss bridge over Red Cedar River on CTH Y

Location

Dunn County, Wisconsin

Status

Replaced by new bridge

History

Built 1934; Replaced 1996

Builder

- Worden-Allen Co.

Design

Single span, 12 panel riveted Warren overhead truss with verticals.

Dimensions

Total length: 216 ft.
Deck width: 20 ft.

Approximate latitude, longitude

+44.71492, -91.89681   (decimal degrees)
44°42'54" N, 91°53'49" W   (degrees°minutes'seconds")

Approximate UTM coordinates

15/587378/4951874 (zone/easting/northing)

USGS topographic map

Durand North

Inventory number

BH 37022 (Bridgehunter.com ID)

Categories 

Update Log 

• August 1, 2008: Essay added by J.R. Manning

Sources 

• J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
• HAER WI-95 - Dunnville Bridge, Spanning Red Cedar River at County Trunk Highway Y, Downsville vicinity, Dunn County, WI

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