Interstate 84 (I-84) is a part of the Interstate Highway System that links Portland, Oregon to I-80 near Echo, Utah. The 119.77-mile-long (192.75 km) segment in the U.S. state of Utah is the shortest of any of the three states the western portion of the Interstate Highway passes through, and contains the eastern terminus of the highway. I-84 enters Box Elder County near Snowville before becoming concurrent with I-15 in Tremonton.