Great Lakes passenger steamers the lakes grew in size and number, and additional decks were built on the superstructure to allow more capacity. This inexpensive method of adding capacity was adapted from river steamboats and successfully applied to lake-going craft. The Erie Canal opened in 1825, allowing settlers from New England and New York to reach Michigan by water through Albany and Buffalo. This route opening and the incorporation of Chicago in 1837, increased Great Lakes steamboat traffic from Detroit through the straits of Mackinaw to Chicago. The screw propeller was introduced to the Great Lakes by "Vandalia" in 1842 and allowed the building
Erie Canal Commission of these bodies. Afterwards the canal commissioners were minor state cabinet officers responsible for the maintenance and improvements of the state's canals. The office of Canal Commissioner was abolished in 1876, and their responsibilities were taken over by the Superintendent of Public Works in February 1878. The Canal Fund and the Canal Board were abolished in 1905. As the United States expanded into western New York and the Northwest Territory, the Great Lakes became an essential part of the system of waterways, on which merchants did most of their shipping. The easiest way from the Great Lakes to the Atlantic