Historic Bridges of the U.S.

Back Bay Lake Winnipesaukee Bridge (Belknap County, New Hampshire)
Built 1942
Stone arch bridge over Back Bay Lake Winnipesaukee on NH 11 in Alton
Open to traffic

Connecticut River Bridge (Sullivan County, New Hampshire)
Built 1900; rehabilitated 1992
Through truss bridge over Connecticut River on NH 11 in Charlestown
Open to traffic

Sugar River Bridge (Sullivan County, New Hampshire)
Built 1930
Concrete arch bridge over Sugar River on NH 10/NH 11/NH 103 in Newport
Open to traffic