Interstate 80 in Utah The freeway enters Utah from Nevada in the city of Wendover on the edge of the Bonneville Salt Flats. The cities of West Wendover, Nevada and Wendover are accessible by I-80's only business loop in Utah, whose interchange is just south of Danger Cave. The highway closely follows the historical routes of the Wendover Cutoff, the Victory Highway, and of the ex-Western Pacific Railroad's Feather River Route (now part of the Union Pacific Railroad Central Corridor) across the salt flats and the larger Great Salt Lake Desert. Bonneville Speedway, home to many land speed records, is accessible from I-80. In
Salt Lake County, Utah 48.91%, making Salt Lake County a majority non-Mormon county. According to the U.S. Census Bureau, the county has a total area of , of which is land and (8.1%) is water. It is the fifth-smallest county in Utah by area. The county borders on the Great Salt Lake and is intersected by the Jordan River. The western portion of the county descends toward the valley of the lake, but perhaps the most dominating physical feature in Salt Lake County are the Wasatch Mountains in the eastern portion of the county, famous for both summer and winter activities. The mountains are