Cowin Iron Works

of Lambertville, New Jersey
New Hampton Bridge (Hunterdon County, New Jersey)
Built 1868
Iron pony truss bridge over Musconetcong River on Rymon Road
Open to traffic

Raven Rock Rosemont Road Bridge (Hunterdon County, New Jersey)
Built 1878
Through truss bridge over Lockatong Creek on Raven Rock Road
Restoration complete, bridge open

School Street Bridge (Hunterdon County, New Jersey)
Built 1870
Pony truss bridge over Spruce Run River on School Street in Glen Gardner
Open to traffic

Shoddy Mill Road Bridge (Warren County, New Jersey)
Built 1868
Pratt Pony truss bridge over Musconetcong River on Shoddy Mill Road
Open to traffic

West Main Street Bridge (Hunterdon County, New Jersey)
Built 1870
Two-span iron pony truss bridge over South Branch Raritan River on W. Main Street in Clinton
Open to one-way traffic