Studies

Planning studies archive

I-5

2011 I-5/Bakerview Value Planning Study (pdf 1.7 mb)

SR 9

2011 SR 9 Corridor Planning Study (pdf 4 mb)

SR 19

2011 SR 19/20 Corridor Planning Study (6 mb) & Appendices (pdf 7.4 mb)

I-90

2012 I-90 Bellevue to North Bend Corridor Study
Table of Contents (pdf 286 kb), Executive Summary-Chapter 4 (pdf 3.8 mb), Chapters 5-7 (pdf 3.2 mb), Appendices (pdf 2.7 kb)

SR 164

2010 SR 164 Corridor Planning Study - Phase 2  (pdf 1.7 mb)

SR 167

2013 SR 167 Comprehensive Tolling Study (pdf 2 mb)

SR 305

2014 SR 305 Suquamish Way Intersection Improvement Project Phase 1 Report (pdf 2 mb)

SR 516

2013 SR 516 Corridor Planning Study
Cover, Signature Page, Table of Contents, Executive Summary and Chapters One through Six (pdf 2.8 mb), Appendices A through C (pdf 2.6), Appendices D through F (pdf 3.9 mb)

SR 520

2013 SR 520 Multi-Modal Corridor Planning Study from I-405 to Avondale Road
Cover, Signature Page, Table of Contents, Executive Summary and Chapter One (pdf 1.82 mb), Chapters Two and Three (pdf 3.78 mb), Chapter Four (pdf 4.39 mb), Chapter Five (pdf 3.22 mb), Chapter Six (pdf 2.58 mb), Chapter Seven (pdf 142 kb), Appendices A-D (pdf 3.01 mb)

SR 538

2011 Mount Vernon – College Way Value Planning Study (pdf 1 mb)

US 2

2010 US 2 Routed Development Plan: Lincoln County Line to I-90 (pdf 2.6 mb)

Rail

2010 Southeast King County Commuter Rail Feasibility Study (pdf 2.6 mb)

Tolling

Tolling Planning Studies List

West Olympia

2010 West Olympia Access Study Executive Summary (pdf 1 mb), Background Reports (pdf 3 mb), Technical Memos (pdf 50 mb), and Assumption Document (pdf 5 mb)

Contact

WSDOT Library and Planning Studies Archives:
Michel Wendt
360-705-7710

Washington State Library (link includes WSDOT search)