Interstate 82 (I-82) is a 143.58-mile (231.07 km) Interstate Highway that extends from I-90 in Ellensburg, Washington, to I-84 near Umatilla, Oregon, in the United States. In the state of Washington, it serves the cities of Ellensburg, Yakima, and the Tri Cities (via I-182), and in Oregon, it serves Umatilla and Hermiston. It is the major route westwards to Seattle and eastwards to Boise and Salt Lake City (via I-84 and I-15). I-82's designation is a violation of the Interstate system's numbering rules, as it is located north of I-84, and is also primarily a north-south route. I-84 was originally designated I-80N, but received its current number in 1980 as part of efforts to eliminate suffixed routes.

I-82 passes over Selah Creek on the Fred G. Redmon Bridge. At its opening on November 2, 1971, it was the longest concrete arch bridge in North America. The bridge spans 549 feet (167 m) across the creek.

en.wikipedia.org/wiki/Interstate_82