Washington State Route 99 is a major north-south highway located in the western part of Washington State. It stretches approximately 36 miles, connecting the city of Everett in the north to Seattle in the south. The route serves as an important corridor for local traffic and provides access to various neighborhoods, businesses, and attractions along the way. Originally designated as a state route in the 1930s, SR 99 has undergone several improvements and upgrades over the years. It features multiple lanes, interchanges, and connections to other major highways, including Interstate 5. The route is also known for its scenic views, particularly as it runs along the Puget Sound.