Simplify the following text for a Grade 6 native English-speaking person.
Original: Interstate 82 ( I-82 ) is a 143.58 m Interstate Highway that extends from I-90 in Ellensburg , Washington to I-84 near Umatilla , Oregon in the United States .
Simplified: Interstate 82 ( sometimes called I-82 ) is a 143.58 m long Interstate Highway in the states of Washington and Oregon .