Thomas G. Pihlfeldt

LaSalle Street Bridge (Cook County, Illinois)
Engineer, 1928
Bascule bridge over Main Branch Chicago River on N. LaSalle 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

Wabash Avenue Bridge (Cook County, Illinois)
Built 1930
Bascule bridge over Main Branch Chicago River on Wabash Avenue in Chicago
Open to traffic

West Division Street Bascule Bridge (Cook County, Illinois)
Built 1904
Bascule bridge over North Branch Chicago River on Division Street in Chicago
Open to traffic