The Eldorado Bridge is a historic structure located in Eldorado, Iowa, United States. It spans the Turkey River for . The Fayette County Board of Supervisors contracted with J.G. Ratcliffe of Waukon, Iowa to design and build this Camelback through truss bridge. It features a single pin-connected span and stone abutments. It was complete in March 1899. The bridge was listed on the National Register of Historic Places in 1998.