This is a very small and unusual skewed pony truss bridge with very lightweight truss members. It has some alterations and repairs made to it. It has a 45 degree skew.
Information and Findings From DHPA Historic Bridge Survey
Statement of Significance
About two-thirds of the south truss of this largely-riveted Warren pony is offset to the east. Given their low horizontal profile, the vertical end-posts are set behind and encased in the concrete abutments. The members are light, even for a pony truss. A pair of angles riveted together comprise the end-posts and top chord; a single provides the diagonals. The single vertical--a simple angle placed at mid-span--is bolted to a gusset at the top panel point along with a pair of diagonals and passes through the lower chord to the I floor-beam below. A sway-brace connected to the upper panel point with the vertical is bolted to a plate extended beyond the floor-beam to help stiffen the truss. The floor-beam helps to carry the runs of stringers above along with the concrete roadway. This unusual truss-beam hybrid seems to have retained most of its original members although in a new orientation. It is unusual for at least two reasons. First, load is significantly shared between the stringers and the trusses through the floor-beam and the lower mid-span panel point. Second, there are six lower panel points but only one floor-beam. The structure may have been designed and originally erected for a non-skewed crossing. Very few of these light pony trusses have survived in Indiana.
References Charles J. Ritzler, Bridge Inspection Report: Carroll County (Delphi, 1974-75). Rumschlag Technical Services, Carroll County Bridge Inventory & Appraisal Report (Brownsburg, 2006).
Bridge Considered Historic By Survey: Yes
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