william a irvin bulk freighter and the aerial lift bridge

1874 1905 1909 1937 aerial aid approved area army background bayfield boat breakwater bridge built bulk canal city condominiums construction corp deck downtown duluth engineers famous freighter harbor historic hole irvin lift light lighthouse lighthouses low minnesota navigation new north other overlooking owned park pier port rise several ship shipping shipwreck side sits south states this three towers tug united view was william windows