After crossing Utah's western border, I-80 crosses the desolate Bonneville Salt Flats west of the Great Salt Lake. The longest stretch between exits on an Interstate Highway is located between Wendover and Knolls, with 37 miles (60 km) between those exits. This portion of I-80, crossing the Great Salt Desert, is extremely flat and straight, dotted with large warning signs about driver fatigue and drowsiness.
East of the salt flats, I-80 passes through Salt Lake City, where it merges with I-15 for three miles before entering the Wasatch Mountains east of the city. It ascends Parley's Canyon and passes within a few miles of Park City as it follows a route through the mountains towards Wyoming.
The route of the Utah section of I-80 is defined at Utah Code Annotated ¡ì 72-4-113(10).
Interstate 80 Utah Descriptions - I80.mobi
