Polygonal Warren pony truss with no verticals

Abandoned MD 36 Bridge (Garrett County, Maryland)
Abandoned polygonal Warren pony truss with no verticals bridge over North Branch Potomac River on Abandoned Maryland 36
Derelict/abandoned

Conrail Railroad Bridge (Monroe County, Pennsylvania)
Built 1932
Pony truss bridge over Conrail Railroad on PA 2024 in East Stroudsburg
Open to traffic

IBH - Grand Calumet River Bridge (Cook County, Illinois)
Built 1907
Polygonal Warren pony truss with no verticals bridge over Grand Calumet River on Indiana Belt Harbor RR
Replaced by a new bridge

Linfield Bridge (Chester County, Pennsylvania)
Built 1932; rehabilitated 1970
Pony truss bridge over Schuylkill River on Linfield Rd. (Main St.)
Open to traffic