State Route 305 (Washington)

State Route 305 (Washington) is a state highway on Bainbridge Island and in Kitsap County connecting the Washington State Ferries terminal to State Route 3 in Poulsbo. The route serves as a primary arterial for commuters traveling between Seattle and the Kitsap Peninsula via the Seattle–Bainbridge Island ferry. It links residential neighborhoods, commercial districts, and regional parks while interfacing with multimodal facilities and regional transportation planning agencies.

Route description

SR 305 begins at the Bainbridge Island ferry terminal adjacent to the ferry slip used by the Washington State Ferries route to Colman Dock in Seattle and proceeds northeast along High School Road and Highway 305 through downtown Bainbridge Island. The highway passes near the Bainbridge Island Museum of Art, Bainbridge Island Historical Museum, and the Bainbridge Island Japanese American Exclusion Memorial, then skirts residential areas toward the island’s northern spine. Crossing the island via the highway, SR 305 intersects local arterials that serve Bloedel Reserve, Fort Ward Park, and the Bainbridge Island School District facilities. The route continues across the Agate Pass Bridge—a two-lane cantilever bridge that spans Agate Pass—connecting to the Kitsap Peninsula and entering the city of Poulsbo, Washington. In Poulsbo SR 305 becomes a downtown main street, intersecting city streets that provide access to the Poulsbo Marine Science Center, the Liberty Bay waterfront, and industrial areas before terminating at an interchange with SR 3 near the Kitsap Mall corridor and links to Naval Station Everett transit corridors.

History

The corridor predates state designation, serving as island roads used by early settlers and linking the ferry landing established in the early 20th century to nascent commercial districts. The Agate Pass Bridge opened in 1950 as part of regional efforts to connect Bainbridge Island with the Kitsap Peninsula, reducing reliance on vehicular ferries and spurring suburban development. When Washington renumbered state highways in 1964, the corridor received its current numeric assignment, formalizing state maintenance and integration with the Washington State Department of Transportation network. Subsequent decades brought widening projects, safety improvements, and streetscape work in downtown Poulsbo tied to urban renewal initiatives influenced by regional planning from entities such as the Puget Sound Regional Council and funding mechanisms like the Federal Highway Administration programs. The ferry-terminal approach and downtown segments have been the focus of multimodal upgrades to accommodate rising commuter demand associated with growth in Seattle employment centers including Downtown Seattle and the South Lake Union technology cluster.

Major intersections

The route's principal junctions reflect its role as a connector between ferry service and the Kitsap freeway network: - Southern terminus: approach to Washington State Ferries terminal at Colman Dock–Bainbridge Island ferry connection, linking to Seattle-bound ferry routes. - Downtown Bainbridge Island intersections with Winslow Way and local arterials near the Bainbridge Island Library and municipal services. - Agate Pass Bridge crossing between Bainbridge Island and Kitsap Peninsula, providing access to marine facilities and parkland at Agate Pass State Park. - Northern terminus: interchange with Washington State Route 3 in Poulsbo, connecting to Bremerton and the Tacoma–Olympia corridor.

Traffic and usage

SR 305 functions as a multimodal spine for the central Kitsap commuting shed, carrying peak-direction traffic associated with ferry arrival and departure peaks and daily commuter flows to Seattle's employment centers such as Pioneer Square and University District. Traffic volumes fluctuate seasonally with tourism to attractions like the Bloedel Reserve and waterfront festivals in Poulsbo and are monitored by the Washington State Department of Transportation for planning and maintenance priorities. The route supports local transit routes operated by Kitsap Transit and accommodates bicycle and pedestrian traffic where complete-streets retrofits have occurred, interfacing with park-and-ride facilities and regional carpool programs administered through the Puget Sound Regional Council.

Future plans and improvements

Planned improvements emphasize safety, multimodal access, and resilience. Proposals include capacity enhancements near ferry terminal approaches coordinated with Washington State Ferries scheduling changes, intersection upgrades in downtown Bainbridge Island and Poulsbo funded through state transportation grants, and structural monitoring and preservation for the Agate Pass Bridge aligned with seismic retrofit guidance from the Federal Highway Administration and the Washington State Department of Transportation. Bicycle and pedestrian projects are slated to expand protected facilities and improve access to transit hubs in partnership with Kitsap Transit and local governments. Long-range planning by the Puget Sound Regional Council and Kitsap County examines potential demand shifts from regional growth centers like Bellevue and Redmond and evaluates SR 305's role in resiliency strategies for maritime and commuter connections.

Category:State highways in Washington (state) Category:Transportation in Kitsap County, Washington