SR 305 is a state route located in the state of Washington. It primarily connects the city of Bainbridge Island to the mainland, providing access to the Seattle metropolitan area. The route is approximately 8 miles long and is an important transportation link for residents and visitors. The highway features scenic views of Puget Sound and the surrounding landscape. It includes a bridge that crosses the Agate Pass, making it a vital route for commuters and travelers. SR 305 also serves as a gateway to various recreational areas and attractions on Bainbridge Island.