 This attempt, by the Florence Bridge Company, obtained Congressional approval, but was not completed due to funding constraints.In 1872, the site was considered by Union Pacific prior to their construction of the Union Pacific Missouri River Bridge and in 1885, construction actually began on a Chicago, St. Paul, Minneapolis, and Omaha Railway bridge before being abandoned.Attempts to build a bridge were also made in 1922 and 1936, however, it was not until the 1950s that a bridge was finally completed.