Kahn arch

The Kahn arch bridge category is to designate those extremely rare concrete arch bridges which use the type of reinforcing patented by Julius Kahn of the Trussed Concrete Steel Company of Detroit, Michigan.

Fairmount Avenue Bridge (Chautauqua County, New York)
Built 1910
Kahn reinforced concrete arch bridge over Chadakoin River on Fairmount Avenue
Open to traffic

Lake Park Footbridge (Milwaukee County, Wisconsin)
Built 1906
Concrete arch bridge over Ravine Road on Lake Park in Milwaukee
Open to traffic