Built 1821
Amsterdam Bridge (1821) (Montgomery County, New York)
Built 1821; Replaced 1839Lost Bridge over Mohawk River on RoadReplaced by a new bridge
Auburn Tunnel (Schuylkill County, Pennsylvania)
Built 1821; daylighted 1857Abandoned tunnel on Schuylkill CanalDerelict/abandoned/open cut
Bridge Point Bridge (Bucks County, Pennsylvania)
Built 1821Lost Stone arch bridge over Neshaminy Creek on road and trolleyRemoved but not replaced
Brooks Bridge (Middlesex County, Massachusetts)
Built 1821Lost Stone arch bridge over Middlesex Canal on Brooks Road in Medford.Removed but not replaced