At the time of it's demise, this may have been the oldest iron bridge remaining in the state. It was built with Wheelock Patented abutments and piers which were made of iron plates.
Facts
Overview
Lost Pratt through truss bridge over Eel River on Wabash Road
Posted August 7, 2010, by Ed Hollowell (erhollowell [at] aol [dot] com)
This bridge was discussed in "Bridge Transitions, From Wood to Iron" by George E. Gould on "Outdoor Indiana" July-Aug. 1982. Archives on line at Indiana University Digital Library.