High-triangular truss
The truss is related to the Pengram. It consists of sloping struts like a Howe truss, and sloping tension rods like a Pratt truss with a polygonal top chord. It seems these were built only by the Indiana Bridge Company of of Muncie, Indiana.
Peterson Ford Bridge (Delaware County, Indiana)Built 1902; rehabilitated 1985
Through truss bridge over Mississinewa River on CR 850 North
Seven Mile Road Bridge (Preble County, Ohio)Built 1906 by the Indiana Bridge Co. of Muncie, In., Restored 2014-15
Polygonal Warren through truss bridge over Seven Mile Creek on TR 331
Restored and open to traffic
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