This bridge stands on the Mormon Pioneer Trail from Nauvoo, Illinois, to the Rocky Mountains. Driven from their homes by mobs, many dispossessed Mormon people crossed the Mississippi River on the ice in February 1846. From these refugees, five hundred volunteers for the Mexican War left here on the longest infantry march in recorded history. Winter Quarters was established on the west bank of the Missouri River, and a ferry operated at this site. Six hundred of these people, Nebraska's first white settlers, died here that winter. On April 5, 1847, Brigham Young and one hundred forty-seven others resumed the journey to select the trail and locate the place where the Mormon people could worship God in accordance with their religious belief. They reached the valley of the Great Salt Lake on July 24 and founded Salt Lake City "in the top of the mountains." Thousands followed. They instituted modern irrigation and built an empire in the West.