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Perry Trail Bridge

Massive Warren Pony Truss over N. Raccoon River
Perry, Dallas County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name Perry Trail Bridge
Built By Chicago, Milwaukee & St. Paul Railroad
Contractor Unknown
Currently Owned By Dallas County
Length 912 Feet Total, 110 Foot Main Spans
Width 2 Tracks, 1 In Use
Height Above Ground 15 Feet (Estimated)
Superstructure Type Warren Pony Truss, Deck Girder and Timber Beam
Substructure Type Concrete
Date Built 1913, Approaches Replaced 1943
Traffic Count 0 Trains/Day (Bridge is a Trail)
Current Status Rails to Trails
MILW Bridge Number Z-1220
Significance Moderate Significance
Documentation Date April 2017


This massive pony truss bridge crosses the N. Raccoon River near Perry.
Originally built in 1913 to replace a previous single track bridge, the structure has had some alterations from the original design.
The original approaches on either side featured concrete slab spans, which were replaced with laminated beams in 1943. These have likely been replaced since the original construction.
Other than this, the bridge has remained largely unchanged. The two main spans of the bridge are massive Warren Pony Trusses with riveted connections. These are approached by a trio deck girder spans on either side, and the wood beam spans.
The entire bridge is set onto concrete substructures. Today, the trail only uses one track of the bridge.
Overall, the bridge remains in good condition. This bridge is a prime example of how the Milwaukee Road designed this route to be durable.

The author has ranked the bridge as being moderately significant, due to the unique design of the bridge.
The photo above is an overview. The bridge can be accessed from the trail which it carries.

N. Raccoon River Railroad Bridges
Upstream Jefferson Trail Bridge
Downstream Adel Trail Bridge

Citations

Source Type

Source

Build Date Date Stamp
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele