The King Iron Bridge Co. played an important role in the development and construction of metal truss bridges, a product of American engineering and construction technology, nationwide during the later part of the Nineteenth Century. The King Iron Bridge & Manufacturing Co. was organized under that name in Cleveland in 1871 by Zenas King, who had started his career in building bridges in 1858. King came to Cleveland from Cincinnati around 1861, and by 1865 had established his works on Wason (East 38th St.) between St. Clair and Hamilton Avenue. The Company moved to a larger plant on Ruskin Ave.(East 69th St.) around 1888.
Company history and a salesman's catalog for ordering components.

