The Oregon and California Trails entered Uinta County from South Pass, while the Overland Trail came through Bridger Pass. In 1845, more than 3,000 emigrant were on the Oregon Trail seeking adventure, fortune or religious freedom. The Mormon pioneers started out from Winter Quarters on the Missouri River on April 15, 1847. They left the Oregon Trail at Fort Bridger, Wyoming, and proceeded through Echo Canyon to Emigration Canyon into the Salt Lake Valley, arriving July 24, 1847.