SR 16 Study

SR 16 – Tacoma Narrows Bridge to SR 3 Congestion Study

WSDOT is in the process of finalizing the study report outlining strategies to improve travel in the corridor. The report will guide WSDOT moving forward in identifying future solutions. WSDOT anticipates completing this study January 2019.

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

For updates about this study, sign up for our listserv, "State Route 16 Congestion Study" on GovDelivery.

The end result 

The study will summarize existing and future conditions in the corridor -- such as congested areas -- based on data and stakeholder input. This study will propose near-, mid-, and long-term strategies to improve travel.

The study will conclude with a range of strategies to improve travel in the corridor. The study report with recommended strategies will guide WSDOT moving forward in identifying future solutions.

The strategies to improve travel in the corridor could include:

  • Operational improvements
  • "Smart highway" devices that help WSDOT manage traffic and relay roadway information to the public such as variable-message signs and other Intelligent Transportation System (ITS) improvements
  • Encourage carpools and vanpools to help encourage people from not driving alone during peak periods and other transportation demand management strategies. 
  • Transit, freight, bicycle, or pedestrian improvements
  • Enhancements to roadway configuration
  • Education and enforcement


The SR 16, Tacoma Narrows Bridge to SR 3, Congestion Study is 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

Claudia Bingham Baker, Communications Manager