Built during 1760s

Adams Street Bridge (Suffolk County, Massachusetts)
Slab spans built 1765; arch spans added 1847; rehabilitated 2006
Stone bridge over Neponset River on Adams Street
Open to traffic

Chester-Hadlyme Ferry (Middlesex County, Connecticut)
Began service 1789
Ferry across Connecticut River on Route 148
Open to traffic

Choate Bridge (Essex County, Massachusetts)
Built 1764; widened 1838
Two-span stone arch bridge over Ipswich River on MA 1A (Main Street) in Ipswich
Open to traffic

Sewall's Bridge (York County, Maine)
Built 1761; replaced 1934
Lost Timber stringer bridge over York River on Organug Road
Replaced by a new bridge