Carthage, New York

MWHA - Black River Bridge (Jefferson County, New York)
Pony plate girder bridge over Black River on Mohawk, Adirondack & Northern RR
Open to traffic

State Street Bridge (Old) (Jefferson County, New York)
Built 1895 by Buffalo Bridge & Iron Works; Replaced 1949
Lost Bridge over Black River on Rte 136
Replaced by a new bridge

State Street Bridge (Replacement) (Jefferson County, New York)
Stringer bridge over MOHAWK ADIR & NO, BLACK on RTE 126
Open to traffic