High Quality Content by WIKIPEDIA articles! State Route 702 (SR 702) is a 9.32-mile (15.00 km) long two-lane state highway located entirely in Pierce County, Washington, United States. The highway travels through rural Pierce County, and has existed since at least 1931 as State Highway 10, then as Secondary State Highway 5J until the 1964 state highway renumbering when it was renumbered to SR 702. The roadway the highway is routed along, continues east to an interchange with SR 161.