High Quality Content by WIKIPEDIA articles! Interstate 182 (I-182) is a 15.19-mile (24.45 km) Interstate Highway that extends from I-82 west of Richland to US 12 in Pasco. It serves the Tri-Cities. The whole length of I-182 is concurrent with US 12, which extends westwards to Yakima, Naches, and Aberdeen and extends eastwards to Walla Walla, Lewiston, Idaho, Chicago, Illinois, and Detroit, Michigan. I-182 is the only auxiliary Interstate spur of Interstate 82. An estimated 43,000 motorists use the road daily in Washington.