sentences:  Its deck used white pine planks.The southeast corner of the Rush Street Bridge, which connected to Michigan Avenue, was the location of the Goodrich docks from which the SS "Christopher Columbus" made its daily round-trip excursions to Milwaukee, Wisconsin.Although she was used for excursions elsewhere around the Great Lakes, her regular schedule was a daily trip to Milwaukee, leaving Chicago mid-morning, sailing to Milwaukee for a two-hour stopover, and then returning.