Business Loop I-82 - Sunnyside

Business Loop I-82 traveled 6.5 miles east through Sunnyside from Exit 63 near the community of Outlook. Sunnyside Road connected the business loop west end with Yakima Valley Highway (old U.S. 12) leading east into the city. The eastern section of the former route constitutes a commercial boulevard from Mid Valley Mall southeast to Washington State Route 241 (Waneta Road), which returned the loop to I-82 at Exit 69.

One or more Business Loop I-82 shields were still posted along old U.S. 12 in the Sunnyside area as of Summer 1997. A lone marker remained through at least 2012.