State Route 305 is a state highway located in the state of Washington. It runs for approximately 8 miles, connecting the city of Bainbridge Island to the mainland via the Agate Pass Bridge. This route serves as a vital link for residents and visitors traveling to and from the island. The highway is primarily a two-lane road, providing access to various local attractions, including parks and waterfront areas. It also facilitates the movement of goods and services, contributing to the local economy. State Route 305 is an essential part of the transportation network in the region.