Spiral Bridge

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"Road of Tomorrow" (Queens County, New York)
Built 1939
Lost Concrete stringer bridge over 1939 New York World's Fair on Ford's 1939 New York World's Fair Exhibit
Removed

Big Four Bridge (Jefferson County, Kentucky)
Built 1929 using preexisting stone piers. Interurban traffice ends 1939; Approches scrapped 1974.
Rail-Trail six-span through truss railroad bridge over the Ohio River at Louisville
Open to pedestrians only

Little Log House Pioneer Village Spiral Bridge (Dakota County, Minnesota)
Built 1893 over Yellow Bank River but relocated to the Little Log House Pioneer Village in 1989
Thacher through truss bridge over a man made pond on a pedestrian path
Open to pedestrians only

Mt. Vernon Road Spiral Footbridge (Linn County, Iowa)
Reportedly built in the 1960s
Concrete rigid frame bridge over Mt. Vernon Road on Pedestrian Pathway
Open to pedestrians only

Roosevelt Island Bridge (New York County, New York)
Built 1955
Vertical lift bridge over East River at Roosevelt Island in New York
Open to traffic

Spiral Bridge (Dakota County, Minnesota)
Built 1895; Demolished December 1951
Lost Parker through truss bridge over Mississippi River
Lost

UI Spiral Footbridge (N) (Johnson County, Iowa)
Built 1960
Concrete rigid frame bridge over US 6 on Pedestrian Pathway
Open to pedestrians only