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Davenport Waterworks Trestle

Pony Truss and Girder Bridge over US-67 and 11th Street
Davenport, Scott County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name Davenport Waterworks Trestle
Built By Chicago, Milwaukee St. Paul & Pacific Railway
Contractor (Original Steel Components) Wisconsin Bridge & Iron Company if Milwaukee
Currently Owned By Dakota, Minnesota & Eastern Railroad
Length 1,398 Feet Total, 119 Foot Main Spans
Width 1 Track
Height Above Ground Varies, 20 Feet Average (Estimated)
Superstructure Type Wooden Trestle with Deck Plate Girder, Warren Pony Truss and I-Beam
Substructure Type Concrete and Timber Pile
Date Built 1899, Pony Trusses Added 1984
Traffic Count 1 Trains/Day (Estimated)
Current Status In Use
DM&E Bridge Number H-8
Significance Moderate Significance
Documentation Date December 2017


One of the longest and most unique bridges in Davenport contains a variety of components.
When first built in 1899, the bridge contained the current deck girder span over 11th Street, as well as a pony truss over River Drive.
The bridge can be divided into three segments: the span over 11th Street, the trestle middle and the pony truss spans over River Drive.
In addition, the main pony truss span was a riveted Warren Pony Truss with 6 panels, which was built in 1905. The entire bridge rested on wooden substructures.
However, the pony truss span was replaced in 1984 by a pair of riveted pony truss spans. In addition, several trestle spans were replaced by I-Beam spans.
The new substructures for these spans include concrete pile structures. The pony truss spans are heavily skewed.
Overall, the bridge remains in good condition. However, it likely will not carry train traffic for more than another decade.

The author has ranked this bridge as being moderately significant, due to the unique history of the structure.
The photo above is an overview. The bridge can be accessed from any of the nearby streets.

Citations

Source Type

Source

Build Date Milwaukee Road Archives at the Milwaukee Central Library
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele