The Illinois and Michigan Canal ran 96 miles (154 km) from the Bridgeport neighborhood in Chicago on the Chicago River to LaSalle-Peru, Illinois, on the Illinois River. It was finished in 1848 when Chicago Mayor James Hutchinson Woodworth presided over its opening; and it allowed boat transportation from the Great Lakes to the Mississippi River and the Gulf of Mexico. The canal enabled navigation across the Chicago Portage and helped establish Chicago as the transportation hub of the United States, opening before railroads were laid in the area. Its function was largely replaced by the wider and shorter Chicago Sanitary and Ship Canal in 1900 and it ceased transportation operations in 1956 .