Revised and expanded on 1/17/2018
The current Monroe Street Bridge (378 West; 50 South) is the first and only one over the South Branch of the Chicago River. It crosses the South Branch east to west 2 miles from the river mouth. It opened on February 22, 1919.. The bridge type is a metal rivet-connected Pratt Pony Truss, movable; double leaf bascule (fixed trunnion) and approach spans;metal stringer (multi-beam) fixed. There is one main span and 3 approach spans. At one time, there were ornamental pillars at each end of the bridge. Also, at one time, there were arched overhead beams. These were for support for the street car cables. Neither one of these is currently present. The bridge tender houses are granite faced octagonal structures.
The main span measures 193 feet. Overall structure length is 271 feet. Roadway width measures 36 feet.
Design: City Bureau of Engineering; architect Edward Bennett
Superstructure Ketler and Elliott.
Substructure. Fitzsimons and Connell Dredge and Dock Company
Construction costs were: $525,447.
Deck Condition Rating Very Good 8 out of 9
Superstructure Condition Rating Good 7 out of 9
Substructure Condition. Rating. Good 7 out of 9
Appraisal. Functionally Obsolete