A detailed historical record of the design and construction of a double-track swing draw span for the Calumet & Blue Island Railway, built by Edge Moor Bridge Works between 1895 and 1896. This book provides insights into the engineering practices and structural designs of late 19th-century American railway infrastructure. Focusing on the specifics of the 246 ft.-6 in. span, it offers valuable information for civil engineers, historians of technology, and anyone interested in the evolution of bridge construction techniques. The detailed account captures the technical challenges and innovative solutions employed in creating a vital piece of railway infrastructure during a period of rapid industrial expansion.