Document library
Dive into the details and find helpful information in the links listed below. Types of materials that are available include: detailed project information, Board of Directors materials, environmental documents and technical reports. Documents may include graphics and drawings based on the early stages of design. Designs are subject to change as the project progresses. Not all project documents are available online. Contact us if you have questions.
Read the entire plan
- A MASS TRANSIT GUIDE - The Regional Transit System Plan for Central Puget Sound
- APPENDIX A - Detailed Description of Facilities and Estimated Costs
- APPENDIX B - Financial Policies
- APPENDIX C - Benefits, Costs, Revenues, Capacity and Reliability
- APPENDIX D - Social, Economic and Environmental Impacts: Performance Characteristics by Mode; and Integration with Regional Land Use
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- ST3 DISTRICT-WIDE MAILER (required by RCW 81.104.140(8)) - Oct 2016
- ST3 FOLIO (August 2016)
- ST3 FUNDING BACKGROUND (September 2016)
- ST3 PROJECT PHASING (June 2016)
- ST3 SYSTEM PLAN PROJECT LIST (June 23, 2016)
- ST3 PROJECT TIMELINE FAQ (April 2016)
- ST3 COST ESTIMATING FACT SHEET (December 2015)
- ST3 GETTING THE JOB DONE FACT SHEET (April 2016)
- ST3 OVERSIGHT AND AUDITS FACT SHEET (September 2016)
- ST3 COMMON PROJECT ELEMENTS (July 2016)
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ST3 DRAFT PLAN
On March 24, 2016, the Sound Transit Board of Directors released a ST3 Draft Plan for public input (comment period ended May 2, 2016). The ST3 Draft Plan is explained in these documents.
- ST3 PROPOSED UPDATED PROJECTS AND TIMELINES (June 2, 2016)
- ST3 PROPOSED AMENDMENTS BY SUB-AREA (May 26, 2016)
- ST3 DRAFT PLAN MAP (March 2016)
- PROJECT DETAILS BY MODE: LIGHT RAIL (March 2016)
- PROJECT DETAILS BY MODE: BUS AND BUS RAPID TRANSIT (March 2016)
- PROJECT DETAILS BY MODE: SOUNDER COMMUTER RAIL (March 2016)
- PROJECT DETAILS BY MODE: HCT STUDIES, POLICIES AND PROGRAMS (March 2016)
ST3 DRAFT PLAN PUBLIC INVOLVEMENT
Thousands of residents across the region provided input on the Sound Transit 3 Draft Plan from March 29 through May 2, 2016. Sound Transit received 2,320 written comments and engaged with more than 1,250 attendees at seven open houses. The agency received 34,706 responses to a non-scientific online survey.
- ST3 DRAFT PLAN OUTREACH RESULTS PRESENTATION (May 12, 2016)
- ST3 DRAFT PLAN OUTREACH RESULTS SUMMARY (May 12, 2016)
- ST3 DRAFT PLAN OUTREACH AND RESEARCH RESULTS PRESENTATION (May 5, 2016)
- ST3 DRAFT PLAN COMMENT: AGENCIES AND JURISDICTIONS
- ST3 DRAFT PLAN COMMENT: STAKEHOLDER ORGANIZATIONS
- ST3 DRAFT PLAN COMMENT: PUBLIC COMMENTS
- ST3 DRAFT PLAN COMMENT: ONLINE SURVEY OPEN-ENDED COMMENTS
- ST3 DRAFT PLAN ONLINE SURVEY TOPLINE RESULTS (May 5, 2016)
- ST3 DRAFT PLAN PUBLIC MEETING PRESENTATION (April 2016)
- ST3 DRAFT PLAN PUBLIC MEETING DISPLAYS (April 2016)
IDENTIFYING ST3 CANDIDATE PROJECTS
During summer 2015, public involvement helped to shape the candidate projects that were considered for ST3. Thousands of residents across the region commented on a Draft Priority Project List.
- VIEW THE CANDIDATE PROJECTS (online)
- ST3 CANDIDATE PROJECTS LIST - AUG. 27 CHANGES HIGHLIGHTED (August 2015)
- ST3 CANDIDATE PROJECTS LIST - FULL LIST (August 2015)
- CANDIDATE PROJECT SCOPE COMMENTS FROM JURISDICTIONS, AGENCIES AND ORGANIZATIONS (February 2016)
- CANDIDATE PROJECT EVALUATION METHODOLOGIES (December 2015)
- DRAFT PRIORITY PROJECTS LIST (June 2015)
- ST3 DRAFT PRIORITY PROJECTS LIST ONLINE SURVEY TOP LINE RESULTS (July 2015)
- ST3 DRAFT PRIORITY PROJECT LIST OUTREACH RESULTS SUMMARY (July 2015)
- ST3 PUBLIC COMMENT: AGENCIES AND JURISDICTIONS (July 2015)
- ST3 PUBLIC COMMENT: STAKEHOLDER ORGANIZATIONS (July 2015)
- ST3 PUBLIC COMMENT: COMMENTS BY CORRIDOR (July 2015)
- ST3 PUBLIC COMMENT: OPEN-ENDED SURVEY RESPONSES (July 2015)