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Lyndon Bridge

Lyndon Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: October 15, 2021

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Facility Carried / Feature Intersected
6th Avenue (Lyndon Road) Over Rock River
Location
Lyndon: Whiteside County, Illinois: United States
Structure Type
Metal 10 Panel Pin-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed
Construction Date and Builder / Engineer
1894 By Builder/Contractor: Keefer and Wyncoop and Engineer/Design: R. S. Riser
Rehabilitation Date
1912
Main Span Length
200.0 Feet (61 Meters)
Structure Length
700.0 Feet (213.4 Meters)
Roadway Width
18 Feet (5.49 Meters)
Spans
3 Main Span(s) and 1 Approach Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

Visit the official village website for this historic bridge, where you can donate towards the maintenance of the timber deck of the bridge.

In a state that preserves very few historic bridges, this rare bridge's community came together to support and preserve one of the largest surviving pin-connected truss bridges in the state. When the county closed the bridge to all traffic in 1980, and in 1998 Lyndon took ownership of the bridge to preserve it for pedestrian use, halting plans for demolition of the historic bridge.

Pin-connected Pennsylvania truss bridges of any kind are rare, and most are single-span examples. As such, this bridge with three Pennsylvania truss spans plus a Pratt truss span is of high significance. As a pre-1900 bridge it is even more significant; most surviving highway Pennsylvania truss bridges date to after 1900. The Pratt truss at the southern end dates to 1912 and is an addition to the original bridge.

Some sources have indicated that Milwaukee Bridge & Iron Works and Clinton Bridge & Iron Works were involved with this bridge, although it is not clear if they were involved. One news article mentioned Milwaukee Bridge but only in reference to repairs in the 1930s. The National Register nomination references Keefer and Wyncoop as the contractor. Little is known about this company. Little is known about the referenced engineer as well, although a 1900 article stated that "Mr. R. S. Riser, M. Am. Soc. C. E., has resigned his position as Construction Engineer for the Pennsylvania Bridge Co., and has accepted the position of Chief Engineer of the New Columbus Bridge Co., of Columbus, O."

Lyndon deserves to be thanked for choosing to preserve this bridge and its ongoing efforts to maintain this bridge for pedestrian use. Please consider a donation toward the preservation of this bridge using the above link.

View National Register of Historic Places Nomination Form For This Bridge

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Photo Galleries and Videos: Lyndon Bridge

 

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Maps and Links: Lyndon Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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