Reference

Department of Planning and Development Commission on Chicago Landmarks ... Street; 1912-1914; Paul Gerhardt, Sr. (January 23, 2019) ... Cortland Street Drawbridge ~ 1440 W. Cortland St.; 1902; John Ernst Ericson. Bridgehouse reconstruction: 1982. (July 24, 1991) 74. (Former) Cosmopolitan State Bank Building ~ 801 N. Clark St.; 1920;

Bureau of Citywide Systems & Historic Preservation Kathy Dickhut, Deputy Commissioner . 2 Chicago Landmarks are those buildings, sites, objects, or districts that have been officially ... Street; 1912-1914; Paul Gerhardt, Sr. (January 23, 2019) ... Cortland Street Drawbridge ~ 1440 W. Cortland St.; 1902; John Ernst Ericson. Bridgehouse

The Cortland Street Drawbridge (originally known as the Clybourn Place drawbridge)[4] over the Chicago River is the original Chicago-style fixed-trunnion bascule bridge, designed by John Ericson and Edward Wilmann.[3] When it opened in 1902, on Chicago's north side, it was the first such bridge built in the United States. The bridge was a major advance in American movable bridge engineering, and was the prototype for over 50 additional bridges in Chicago alone.[5] The bridge was designated as an ASCE Civil Engineering Landmark in 1981, and a Chicago Landmark in 1991. | Design | Chicago trunnion bascule bridge[1] | Historic American Engineering Record (HAER) No. IL-138, "Chicago River Bascule Bridge, West Cortland Street, Spanning North Branch of Chicago River at West Cortland Street, Chicago, Cook County, IL", 9 photos, 2 data pages, 2 photo caption pages