The 104th Avenue (Willow Springs Road) Bridge crosses the Cal Sag Canal in Palos in Cook County. It is a metal 8 panel bolt-connected, polygonal Warren through truss, fixed and approach spans: metal stringer (multi beam ) fixed.
The bridge was built in 1964. The builder/contractor is unknown. Engineer/Design was Alfred Benesch and Associates.
Main span is 290 feet.
Structure length is 406 feet
Roadway width is 28 feet
There is one main span and four approach spans.
The bridge was designed so that it could be later modified to a vertical lift bridge. This was never done.
Bridge Inspection (March, 2015)
Superstructure. Condition Rating. Fair. 5 out of 9
Substructure. Condition Rating. Satisfactory 6 out of 9
Deck Condition Rating Fair. 5 out of 9
Sufficiency Rating. 59.5 out of 100