 Transporting goods to and from Denver was a large expense, an expense that railroads could alleviate.In 1862 the United States Congress passed the Pacific Railway Act and Coloradans were excited at the prospect of the railroad crossing the Rockies Mountains through Colorado despite the dismal surveys by John C. Frémont and John Williams Gunnison.When the Union Pacific Railroad chose to go north through Cheyenne, Wyoming many at the time expected that Cheyenne would blossom into the major population center of the region.