SR 16 Study

SR 16 – Tacoma Narrows Bridge to SR 3 Congestion Study

WSDOT has completed the SR 16 Tacoma Narrows Bridge to SR 3 Congestion Study and the report is now available for viewing. 

Study Report

Executive Summary (pdf 2.3 mb)

Study Report (pdf 5 mb)

Study Purpose

WSDOT examined traffic congestion along State Route 16 between the Tacoma Narrows Bridge and Gorst, as well as portions of SR 3 and SR 304 in Pierce and Kitsap counties. The study investigated how to manage current and future travel in the corridor using strategies identified through the Practical Solutions planning approach. Practical Solutions is a performance-based approach to transportation decision-making.

Public Outreach

View the results of the online survey (pdf 2 mb) conducted in May 2017 about traveling the State Route 16 corridor.

Learn more about the results of the online and in-person open house events (pdf 912 kb) held in October and November 2017.

SR 16 Tacoma Narrows Bridge to SR 3 Congestion Study Map

The End Result 

The study report concluded with recommended near-, mid- and long-term strategies that will guide WSDOT moving forward in identifying future solutions. Highlights of these recommendations include:

  • Operational, channelization, and signal/ITS improvements at key local and state locations
  • Capacity improvements at key local and state facilities by widening, roundabout, or signal installations
  • Improving pedestrian and bicycle facilities by the extension of the Cushman Trail, new facilities between Bremerton and Port Orchard, and additions or enhancements to bike lanes along the corridor
  • SR 3 and SR 16 capacity improvements by peak-use shoulder lanes and widening
  • SR 304/Naval Base Kitsap-Bremerton area improvements at Farragut Avenue and Charleston Beach Road
  • SR 3/SR 16 interchange access control, intersection improvements, and grade separation
  • Tremont Street and Sedgwick Road interchange capacity improvements at key intersections
  • SR 302 and Borgen Boulevard Interchange capacity, operational, and queue storage improvements
  • Olympic Drive, Wollochet Drive, and Hunt Street crossing operational and capacity improvements

Corridor-wide recommendations include:

  • Travel Demand Management strategies
  • Increased coordination of incident response
  • Plans for addressing resiliency and climate change
  • Additional park and ride capacity and coordination between agencies


The SR 16, Tacoma Narrows Bridge to SR 3, Congestion Study was funded by Connecting Washington, a funding package passed by the Washington Legislature in 2015.


November - December 2016: Define project vision and goals

January - April 2017: Understand existing conditions and corridor needs, public opinion survey

May - September 2017: Develop and model strategies to improve travel

October - December 2017: Gather public input on strategies, evaluate strategies

January - May 2018: Develop final recommendations and share final recommendations with members of the public

June - December 2018: Community engagement and review of recommended strategies, write study report

January 2019: Finalize and publish study report


Dennis Engel, Multimodal Planning Manager