Alexander von Babo

12th Street Bridge (Unbuilt) (Cook County, Illinois)
Design
Through truss bridge over Chicago River on 12th Street (Now Roosevelt Road)
Never built

Indiana Avenue Bridge (Old) (Cook County, Illinois)
Design, 1914
Lost Double-intersection Warren through truss bridge over Little Calumet River on Indiana Avenue
Replaced by a new bridge

Kinzie Street Bridge (Cook County, Illinois)
Built 1909
Bascule bridge over North Branch Chicago River on Kinzie Street in Chicago
Open to traffic

North Halsted Street Bridge (Old) (Cook County, Illinois)
Built 1909
Bascule bridge over North Branch Chicago River Canal on N. Halsted Street in Chicago
Demolished and replaced