Fort Bridger was originally a 19th century fur trading outpost established in 1842 on Blacks Fork of the Green River and later a vital resupply point for wagon trains on the Oregon Trail, California Trail and Mormon Trail. The Army established a military post here in 1858 during the Utah War until it was finally closed in 1890. A small town, Fort Bridger, Wyoming, remains near the fort and takes its name from it.