• US 395 - I-82 to I-182 Corridor Planning Study
• US 2: Everett Port/Naval Station to SR 9 Corridor Planning Study, 2016 (pdf 9 mb)
• US 2 Corridor Study Deer Road to Elk-Chattaroy Road, 2015 (pdf 36.7 mb)
• I-90 Speed Limit, 2016
• SR 162: Sumner to Orting Congestion Study Report, 2017 (pdf 13.41 mb)
• SR 169 Safety Study, 2016 (pdf 10 mb)
• US 195 Corridor Crash Analysis, 2016 (pdf 10.6 mb)
• Community Engagement Plan, 2016 (pdf 2.4 mb) 
• Lynnwood Transit Center Multimodal Accessibility Plan Final Report, 2016 (pdf 8.7 mb) and Appendices (pdf 2.3 mb)
• Statewide Human Services Transportation Plan, 2014 (pdf 1.7 mb)
• Statewide Public Transportation Plan, 2016 (pdf 5.2 mb)
• Statewide Transportation Improvement Program (STIP), 2015
• Strategic Planning and Research 2015-2017 Biennium Work Program (pdf 800 kb)
• Sustainable Transportation Action Plan, 2015-2017 (pdf 222 kb)
• Target Zero: Strategic Highway Safety Plan, 2016 (pdf 12.8 mb)
• Tolling Planning Studies List
• Washington Transportation Plan / Long-Range Statewide Transportation Plan, 2007-2026 (pdf 7.6 mb)

Plans and Studies Underway

• US 2 - SR 204 - 20th Street SE Interchange Justification Report
• US 2 Skykomish Planning Study
• ​SR 16 – Tacoma Narrows Bridge to SR 3 Congestion Study
• I-90 - Four Lakes to Idaho - Operational Study
• SR 160 Long Lake Rd SE Planning Study
• SR 161 - 31st Ave SW Overcrossing - Widening Study
• SR 162 - Sumner to Orting Corridor Planning Study
• SR 302 - Elgin Clifton Rd. to SR 16 Corridor Planning Study
• US 395 (I-82 to I-182) Corridor Planning Study
• US 395 - Deer Park Intersection Improvement Study
• Corridor Sketch Initiative
• Highway System Plan (Update)
• Washington Transportation Plan, Phase 2 - Implementation (Long-Range Transportation Plan Update)

Modal Plans

• Aviation System Plan
• Bicycle Transportation and Pedestrian Walkways Plan
• Ferry Long Range Plan
• Highway System Plan 2007-2026 (pdf 20 mb), Technical Update 2007-2026 (pdf 1.8 mb), and Appendices (pdf 4.7 mb)
• State Freight Mobility Plan
• State Rail Plan

Transportation Planning Studies Guidelines and Criteria (pdf 2.6 mb)

Safety Guidance for Corridor Planning Studies (pdf 284 kb)

Contact

Laura Thompson
206-464-1262