Reports & Studies

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Moving the Needle | Levy to Move Seattle | Traffic | Streetcar | Evaluations | Traffic Flow Data | Parking | Bridging the Gap | Missing Link | Annual Reports | Other | Studies | Planning Studies

Moving the Needle Performance Reports

Report Date
2021 Performance Report 2021
2020 Performance Report 2020
2019 Performance Report 2019
2017 Performance Report 2017

Levy to Move Seattle Reports

All Levy to Move Seattle Reports can be found on the Levy Materials Page

Traffic Reports

Report
2022 Traffic Report
2021 Traffic Report
2020 Traffic Report
2019 Traffic Report
2018 Traffic Report
2017 Traffic Report
2016 Traffic Report
2015 Traffic Report
2014 Traffic Report
2012 Traffic Report
2011 Traffic Report
2010 Traffic Report
2009 Traffic Report
2008 Traffic Report
2007 Pedestrian and Bicycle Collision Report
2006 Pedestrian Collision Report

Streetcar Reports

Report Date

Culture Connector Delivery Assessment Executive Summary

October 2023

Culture Connector Delivery Assessment Final Report

October 2023

Culture Connector Streetcar Ridership and Special Markets Memo

November 2023

2022 Annual Streetcar Operations Report

January 2024

2021 Annual Streetcar Operations Report

October 2022

2020 Annual Streetcar Operations Report

September 2021
2019 Annual Streetcar Operations Report September 2020
2018 Semi Annual Operations Streetcar Report

July 2019

Evaluations (Before and After Reports)

The City of Seattle has transformed 36 different roads since 1972. We can confidently say that not only does redesigning our streets make them safer, but it keeps people and goods moving. The Federal Highway Administration agrees. A 2010 study looked at 30 redesigned street in Washington and California and determined there was a 19 percent reduction in collision rate. Read our before and after reports to learn more.

Report Date
35th Avenue SW Road Safety Corridor Report 2015
Fauntleroy Street Rechannelization 2010
NE 65th St Redesign: Before and After Study 2020
NE 75th St Road Safety Redesign 2015
NE 125th Street Rechannelization - Before and After Report 2014
Nickerson Paving and Rechannelization Plan 2010
Nickerson Rechannelization: Before and After Study 2012
Nickerson Rechannelization FAQ 2009
Rainier Ave S Safety Corridor Pilot Project 2017
Stone Way N Rechannelization: Before and After Study 2010

Traffic Flow Data Reports

Report Date
Traffic Flow Data and Map 2019 2020
Traffic Flow Data and Map 2018 2019
Traffic Flow Data and Map 2017 2018
Traffic Flow Data and Map 2016 2017
Traffic Flow Data and Map 2015 2016
Traffic Flow Data and Map 2014 2015
Traffic Flow Data and Map 2013 2014
Traffic Flow Data and Map 2012 2013
Traffic Flow Data and Map 2011 2012
Traffic Flow Data and Map 2010 2011
Traffic Flow Data and Map 2009 2010
Traffic Flow Data and Map 2008 2009
Traffic Flow Data and Map 2006 2007
Traffic Flow Data and Map 2005 2004
Traffic Flow Data and Map 2004 2005

Parking Reports

Report Date
2022 Annual Parking Report

October 2023

2021 Annual Parking Report

June 2022

2020 Annual Parking Report

December 2021

2019 Curbside Management Team Annual Report

May 2020

2019 Paid Parking Study Report

January 2020

2018 Neighborhood-Level Occupancy Summary

October 2018

2018 Annual Parking Report

October 2018

2017 Neighborhood-Level Occupancy Summary

December 2017

2017 Annual Parking Report

September 2017

2016 Annual Parking Report December 2016
2016 Neighborhood Maps September 2017
2014 - 2016 Disabled Plate/Permit Usage by Neighborhood: December 2016
2015 Neighborhood Maps  
2015 Annual Parking Report  
2014 Neighborhood Maps  
2014 Annual Parking Report  
2014 Evening Paid Parking Report  
2013 Neighborhood Maps  
2013 Annual Parking Report  
2012 Neighborhood Maps  
2012 Annual Parking Report  
2012 Event Day Parking Study Report  
2012 Sunday Parking Study Report  
SDOT 2010-11 Paid Parking Study Summary  
2010 Paid Parking Technical Report  
2010 Citywide Paid Parking Study  

Bridging the Gap — Annual Reports and Accomplishments

Report Date
2015 Annual Report 2016
2014 Annual Report 2015
2013 Annual Report 2014
2013 Year End Accomplishments 2014
2012 BTG Annual Report 2013
2012 BTG Accomplishments 2013
2011 Annual Report 2012
2011 Year End Accomplishments 2012
2010 Annual Report 2011
2010 Year End Accomplishments 2011
2007 – 2009 3-year Annual report 2010
2009 Year End Accomplishments 2010
Bridging the Gap 2008 Annual Report 2009
Year-to-Date Accomplishment Highlights 2009
Bridging the Gap 2007 Annual Report 2008
3rd Quarter 2007 Planned Accomplishments 2008
2nd Quarter 2007 Accomplishment Highlights 2008
Report Date
Final Environmental Impact Statement (EIS) May 2017
Final EIS Executive Summary May 2017
Reissued Revised DNS April 2012
Revised DNS February 2011
Revised SEPA checklist February 2011
Signed DNS November 2008
SEPA Checklist November 2008

Annual Reports

Report Date
2013 Action Agenda Progress Report 2013
2012 Action Agenda 2013
2010 Annual Report 2011
2009 Annual Report 2010
2008 Annual Report 2009
2007 Annual Report 2008
2006 Annual Report 2007
2005 Annual Report 2006
2004 Annual Report 2005
2003 Annual Report 2004

Other Reports

Report Date
West Seattle Bridge One-Year Monitoring Report September 2023
2009 Bicycle Progress Report July 2010
2009 Pedestrian Progress Report July 2010
5th Avenue NE Streetscape Design Plan Final Report April 2002
Additional Review of the Impacts of Deep Bored Tunnel Tolling Diversion on City Streets; Identification of Mitigation April 2001
Asset Status and Condition Report - 2020 2020
Asset Status and Condition Report - 2015 December 2015
Center City Circulation Report December 2003
FAP ITS projects and other SDOT ITS strategies 2014
Neighborhood Business District Access Intercept Survey June 2017
Rainier Pilot Project Evaluation February 2017
Safe Routes to School 2015-2016 Annual Report December 2016
SDOT WMBE 2015 Annual Report July 2016

Studies

Study Date
Ballard Bridge Sidewalk Widening Concept Study September 2014
Coal Train Traffic Impact Study October 2012
Comprehensive Neighborhood Parking Study August 1999
2014 Downtown Off-Street Parking Study September 2014
Holgate Street Railroad Crossing Study January 2010
Northgate Pedestrian Bridge Feasibility Study December 2012
Parking Management Study September 2002
South Lander - Hanford Street Grade Separation Study March 2003
SW Admiral Way Safety Project Parking Study August 2015
Terminal 18 Bathroom Feasibility Study June 2015
Variable Tolling Study May 2009

Planning Studies

Our Policy and Planning Division works with other departments and different communities to implement transportation elements of neighborhood plans and identify community transportation priorities. Current planning efforts can be found in our Planning Program page. Past plans include:

Study Date
Accessible Mt. Baker Modal Plan 2016
Arena Transportation Study May 2012
Ballard to Downtown High Capacity Transit Planning Study May 2014
Center City Connector Study September 2014
King Street Station Multimodal Transportation Hub Study 2011
Move Ballard 2016
NE 130th St & Shoreline South/148th Stations: Multimodal Access Study 2020
Northgate Coordinated Transportation Investment Plan 2006
South Lake Union Transportation Study 2004
Southeast Transportation Study (SETS) 2008
University Area Transportation Action Strategy 2008
Westlake Transportation Hub Strategy 2009

Transportation

Greg Spotts, Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623
684-Road@seattle.gov

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The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.