Sanitary District of Chicago

Cermak Road Bridge (Cook County, Illinois)
Built 1906
Bascule bridge over South Branch Chicago River on Cermak Road in Chicago
Open to traffic

Dearborn Street Bridge (Old) (Cook County, Illinois)
Built 1907
Lost Pony truss bridge over Main Chicago River on Dearborn Street
Replaced by a new bridge

Lockport Butterfly Dam Bridge (Will County, Illinois)
Built 1907
Lost Through truss bridge over Sanitary Canal
Removed but not replaced

Main Street Bridge (Cook County, Illinois)
Built 1902
Lost Through truss bridge over Chicago River on Main Street
No longer exists