text: 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 .