Benton Park Brick Arch Bridge (St. Louis, Missouri)
Built 1866
Brick and stone arch bridge over Benton Park Lake on a footpath in Benton Park
Open to pedestrians

Boner Road Bridge (Warrick County, Indiana)
Built 1866
Bowstring through truss bridge over Little Pigeon Creek on Boner Road
Open to traffic

Cornish-Windsor Covered Bridge (Sullivan County, New Hampshire)
Built 1866; rehabilitated 1989
Two-span covered bridge over Connecticut River between Cornish, NH, and Windsor, VT
Open to one-lane traffic

East Haverhill Street Bridge (Essex County, Massachusetts)
Built 1866; rehabilitated 1899
Stone arch bridge over Spicket River on E. Haverhill Street in Lawrence
Open to traffic

Graham Mill Covered Bridge (Livingston County, Missouri)
Built 1866; replaced in the 1940's
Lost covered bridge northwest of Chillicothe
No longer exists

Huddlestone Arch (New York County, New York)
Built 1866 by Calvert Vaux and Jacob Wrey Mould
Stone arch bridge over Montayne's Rivulet on East Drive in New York
Open to traffic

Owens Covered Bridge (Polk County, Iowa)
Built 1866
Covered bridge over a branch of Yeader Creek in Ewing Park
Open to pedestrians only

Rapps Dam Road Covered Bridge in East Pikeland Township (Chester County, Pennsylvania)
Built 1866; rehabilitated 1978
Steel stringer bridge over French Creek on Rapps Dam Road in East Pikeland Townhip
Open to traffic

Red Run Covered Bridge 38-36-10 (Lancaster County, Pennsylvania)
Built 1866
Burr arch-truss bridge over Muddy Creek on Abandoned road
Closed to all traffic

Roebling Suspension Bridge (Hamilton County, Ohio)
Built 1866 by John A. Roebling. Rehabilitated 1955.
Suspension bridge over the Ohio River between Cincinnati and Covington
Open to two-lane traffic