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List of Figures Figure 1. Safe System Approach Wheel Figure 2. Snoqualmie Pass Geographical Context................... ...............12 Figure 3. Study Area & Key Destinations............ ............... 13 Figure 4. Promotional Flyer and Website for Online Engagement 27 Figure 5. Online Engagement Activity......... .......................22 Figure 6. Attendees at a Public Meeting.23 Figure 7. Pedestrians Crossing SR 906 at Silver Fir.................. ..............24 Figure 8. Vehicles Parked in the Designated Lot for the Summit...............................24 Figure 9. Community ldentified Transportation Safety Concerns by Mode ............25 Figure 10. Community ldentified Transportation Safety Concerns by Season........25 Figure 14. Collisions by Road User Type in Snoqualmie Pass (2014 - 2023)...........28 Figure 15. Collisions by Mode in Snoqualmie Pass (2074 - 2023).............................29 Figure 16. Collisions by lnjury Type in Snoqualmie Pass (2074 - 2023l,29 Figure 77. All Collisions by Month in Snoqualmie Pass (2014 - 2023)30 Figure 18. Seasonal Collision Trends in Snoqualmie Pass (2074 - 2023l,.................31 Figure 19. Count Collection 1ocations..................... ..........32 Figure 20. October 2O24Weekend Volumes 33 Figure 21. February 2025 Weekend Volumes. .................34 Figure22. LOS Evaluated lntersections....."............. ..........36 Kittitas County I Snoqualmie Pass Comprehensive Safety Plan List of Tables TT Table 1. Level of Service Definitions... ..................35 Table 2. Countermeasure Cost Estimates..... Figure 23.85th Percentile Travel Speeds - October 2024............. Figure 24. Priority Locations for Safety 1mprovements.................... Figure 25. Countermeasures Toolbox Example Figure 26. Location A Safety lmprovements Figure 27. Location B Safety lmprovements Figure 28. Location C Safety lmprovements Figure 29. Location D Safety lmprovements Figure 30. Location E Safety lmprovements Figure 31. Location F Corridor lmprovements Figure 32. Location F lntersection I mprovements.................. Figure 33. Location F Crossing Treatments Table 3. Location A - Cost Estimates . Table 4. Location B - Cost Estimates. Table 5. Location C - Cost Estimates. Table 6. Location D - Cost Estimates. Table 7. Location E - Cost Estimates..... Table 8. Location F - Cost Estimates. Table 9. Location G - Cost Estimates Appendices Appendix A. Additional Prior Plans and Policies Appendix B. Stakeholder Planning Group Meeting Agendas Appendix C. Summary of Online Engagement Appendix D. Summary of Community Meeting Appendix E. Collision Analysis Appendix F. Traffic Volume Maps Appendix G. Level of Service Analysis Methodology & Results Appendix H. Level of Service Reports Appendix l. Project Locations Cutsheets Appendix J. Countermeasures Toolbox Appendix K. Origin-Destination Analysis Appendix L. Response to Final Public Comment Under 23 U.S. Code 5 407 and 23 U.S. Code S 148, efety data, reports, surveys, schedules, lists compiled or collected for the purpose of identifying, evaluating, or planning the safety enhancement of potential crash sites, hazardous roadway conditions, or railway-highway crossings are not subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action for damages arising from any occurrence at a locatjon mentioned oraddressed in such reports, surveys, schedules, lists, or data. The analysis and recommendations in this report are conceptual in nature based upon limited information, and before implementjng any changes, or using any of its information for design or construction, Kittitas County should conduct a more detailed analysis and make sure that the design or construction documents reflect specific, detailed, local and field conditions. The scope of this work including study locations, time frame, and topics, was determined by the clienl While it is possible that some locations or issues were not addressed in this report, nothing should be inferred by their omission. 42 46 48 50 52 54 58 60 64Table 10. SafetyAction Plan Figure 11. KSI Collisions byYear in Kittitas County (2074 - 2023)28 Table 11. Transportation Safety Funding Sources ....................67 Figure 13. Collisions by Year & lnjury Type in Snoqualmie Pass (2Ot4 - 2023) ......28 Table 12. lnitial Safety Report Card 69 Figure 12. KSI Collisions byYear in King County (2014 - 20231 28 38 4t 42 45 47 49 51 53 55 56 57 59Figure 34. Location G Safety lmprovements.