From the interchange in which US 97 joins the I-82 / US 12, numbered exit 37, the freeway interchanges with many minor streets in Union Gap and some major highways, including a state route, in Yakima, including Valley Mall Boulevard at exit 36, SR 24 and Nob Hill Boulevard at exit 34, Terrace Heights Way and Yakima Avenue at exit 33; at exit 31, US 12 ends its 31 miles long concurrency at the southern terminus of SR 823.