State Highway 109 is a significant roadway located in the state of Washington. It serves as a vital connector between various towns and communities, facilitating local and regional travel. The highway spans approximately 30 miles, providing access to both urban and rural areas. The route begins in the city of Shoreline and extends northward to Lake Forest Park. Along the way, it intersects with several major roads, enhancing connectivity for commuters and travelers. State Highway 109 plays an essential role in supporting the local economy and ensuring efficient transportation in the region.