State Route 12 (SR 12) is a state highway located in the state of Washington. It stretches approximately 150 miles, connecting the cities of Aberdeen and Walla Walla. The route serves as a vital transportation link, facilitating travel through various landscapes, including forests and agricultural areas. The highway runs through several communities, including Chehalis and Yakima, and provides access to recreational areas such as Mount Rainier National Park. SR 12 is an important corridor for both local residents and commercial traffic, contributing to the economic development of the regions it traverses.