Original: Interstate 84 (I-84) is an Interstate Highway in the Western United States that runs from Portland, Oregon, to a junction with Interstate 80 near Echo, Utah.
Simplified: Interstate 84 (sometimes called I-84) is a 769.52 m long Interstate Highway in the states of Oregon, Idaho, and Utah. The road goes from Interstate 5 in Portland, Oregon to Interstate 80 in Echo, Utah.