inputs: hypothesis: Interstate 35W St. Anthony Falls Bridge crosses the Mississippi River. premise: The new Interstate 35W St. Anthony Falls Bridge in Minneapolis, Minnesota, United States was opened shortly after 5 AM today. It replaces a bridge which collapsed last year, killing 13 people. A fire engine and ambulance were first across on each side. In each direction, a line of State Highway Patrol cars was followed by a formation of Department of Transportation construction trucks. A cluster of awaiting vehicles went honking across for a few minutes, then traffic returned to the sparse levels more typical of the pre-dawn period. The September 18 opening was well ahead of the scheduled December 24 goal, earning the contractor, Flatiron-Manson, up to $19.6 million in performance bonuses. The bridge is 189 feet wide, with a main span length of 504 feet and a deck height of over 100 feet above the Mississippi River.