Planning study news
Completed Final Report and Appendices. Drafting prioritization criteria to develop the Prioritization Memo for the final study recommendations.
Purpose
The State Route 99 Lynnwood and Unincorporated Snohomish County Pre-Design Study (SR 99 Study) focused on SR 99 between 212th Street Southwest and Airport Road in Lynnwood and unincorporated Snohomish County. The purpose of the SR 99 Study included:
- Identifying long- and near-term improvements that meet Complete Streets requirements,
- Improving access to transit on SR 99 via walking, rolling and biking,
- Increasing the safety and mobility for all modes of transportation through the corridor, and
- Prioritizing the recommendations for implementation.
The final SR 99 Study defines the Complete Streets vision for SR 99 and a strategic path to implementation. It recommends corridor-wide cross-sections, policy changes and a set of spot treatment packages to close critical transportation gaps, calm motor vehicle speeds, improve access to transit and reduce serious and fatal crashes. Partner agencies and community members shaped the recommendations through extensive coordination and engagement.
The next step is prioritizing the SR 99 Study recommendations.
Final report
Final Appendixes:
- Appendix A: Purpose and Need (PDF 879KB)
- Appendix B: Methods and Assumptions (PDF 1.8MB)
- Appendix C: Existing and Future Conditions Memo – (PDF 24.3MB)
- Appendix D: Environmental Screening (PDF 7.8MB)
- Appendix E: Level 1 and Level 2 Screening Memo (PDF 4.4MB)
- Appendix F: Engagement (PDF 18.7MB)
- Appendix G: Recommended Concepts Memo (PDF 3.4MB)
State Route 99 in Lynnwood and unincorporated Snohomish County is a 6.6-mile access-managed arterial that ties neighborhoods to jobs, schools, shopping, health care and frequent transit. The corridor has evolved from an auto-oriented highway into a multimodal spine with Swift Blue Line operating along SR 99, Swift Orange Line crossing SR 99 at 196th Street Southwest, and Swift Green Line crossing SR 99 at Airport Road, Lynnwood Link light rail is now open near 200th Street Southwest, and future expansion of Link light rail is planned to extend to Everett with a proposed station at Airport Road. Everyday active transportation trips (walking, biking and rolling) remain difficult for people trying to reach transit and other destinations for several reasons: crossings of SR 99 are long and skewed, sidewalks are narrow or missing, there are no bike facilities, driveways are frequent and vehicle speeds are high.
Study process
The study process:
- Reviewed existing and future conditions along the SR 99 corridor.
- Developed a purpose and need to identify the concerns the study will be assessing.
- Engaged and sought feedback from agency partners, the community and interested parties.
- Developed criteria to evaluate how well improvement concepts and corridor alternatives meet the identified needs.
- Developed and evaluate improvement concepts and corridor alternatives.
- Selected the study recommendation.
Feedback from the agency partners, community and interested parties was a crucial part of the study process as it ensures that the recommendations developed meet the needs and preferences of the community.
Community engagement
Community engagement was completed throughout the study. Based on community feedback, we selected a SR 99 Study recommendation. More information can be found in these flyers.
SR 99 study flyer - English (PDF 3.7MB)
SR 99 study flyer - Spanish (PDF 3.2MB)
SR 99 study flyer - Vietnamese (PDF 3.0MB)
SR 99 study flyer - Russian (PDF 3.1MB)
SR 99 study flyer - Chuukese (PDF 3.1MB)
SR 99 study flyer - Marshallese (PDF 3.3MB)
SR 99 study flyer - Ukrainian (PDF 3.2MB)
SR 99 study flyer - Arabic (PDF 2.9MB)
SR 99 study flyer - Chinese (PDF 3.7MB)
SR 99 study flyer - Korean (PDF 3.5MB)
SR 99 study flyer - Tagalog (PDF 3.2MB)
Working groups
Technical Working Group (TWG)
The TWG consists of public works, engineering, and planning staff from local, regional, state and tribal entities. The TWG serves in an advisory role to WSDOT providing technical feedback at multiple steps in the study process.
Technical Working Group Meeting 1
Thursday, November 7, 2024
Presentation (PDF 7.6MB)
Summary (PDF 229KB)
Technical Working Group Meeting 2
Thursday, January 9, 2025
Presentation (PDF 9.5MB)
Summary (PDF 201KB)
Technical Working Group Meeting 3
Thursday, May 1, 2025
Presentation (PDF 6.3MB)
Summary (PDF 184KB)
Technical Working Group Meeting 4
Monday, September 22, 2025
Presentation (PDF 12.8MB)
Summary (PDF 188KB)
Technical Working Group Meeting 5
Thursday, December 11, 2025
Presentation (PDF 3.8MB)
Summary (PDF 145KB)
Technical Working Group Meeting 6
To be determined
Executive Advisory Group (EAG)
The EAG consists of elected officials, chairs and executives from local, regional, state, business and tribal entities. The EWG serves in an advisory role to WSDOT providing policy feedback at multiple steps in the study process.
Executive Advisory Group Meeting 1
Friday, November 22, 2024
Presentation (PDF 4.4MB)
Summary (PDF 216KB)
Executive Advisory Group Meeting 2
Thursday, May 29, 2025
Presentation (PDF 13.2MB)
Summary (PDF 190KB)
Executive Advisory Group Meeting 3
Thursday, December 11, 2025
Presentation (PDF 3.8MB)
Summary (PDF 145KB)
Executive Advisory Group Meeting 4
To be determined
Equity Working Group (EWG)
The EWG consists of representatives from community-based organizations, agencies, and organizations that serve vulnerable populations and overburdened communities along SR 99. The EWG serves in an advisory role to WSDOT providing community feedback at multiple steps in the study process.
Equity Working Group Meeting 1
Thursday, December 5, 2024
Presentation (PDF 5.3MB)
Summary (PDF 152KB)
Equity Working Group Meeting 2
Wednesday, December 17, 2025
Presentation (PDF 4.2MB)
Summary (PDF 289KB)