Madison BRT - RapidRide G Line: Downtown Seattle to First Hill to Madison Valley

Updated: August 12, 2020

What’s happening now?

Construction planned for 2021

A federal report released this month determined SDOT is qualified to complete the Madison St Bus Rapid Transit (BRT) - RapidRide G Line project. This step is an important milestone toward qualifying for Federal Small Starts Grant funding, covering about 45 percent of the project cost.

We're continuing to work with the Federal Transit Administration, Sound Transit, and Seattle City Council to finalize funding agreements and commitments. Thus construction is no longer scheduled to begin in fall 2020. There are many moving parts, but we expect to start construction as soon as spring 2021.

Project Overview

Map of the Madison BRT route

The Madison St BRT - RapidRide G Line route has been shaped by public input.

The Seattle Transit Master Plan (2012) identified Madison St between the Colman Dock Ferry Terminal in downtown Seattle and 23rd Ave E as a future high-capacity, bus rapid transit (BRT) corridor.

The project will provide fast, frequent, reliable, and safe public transportation between 1st Ave in downtown Seattle and Martin Luther King Jr Way. The route will serve densely developed neighborhoods in downtown Seattle, First Hill, Capitol Hill, the Central Area, and Madison Valley. It will connect to dozens of bus routes, the First Hill Streetcar, and ferry service at the Colman Dock Ferry Terminal.

Madison St BRT - RapidRide G Line is a partnership between the City of Seattle and King County Metro. King County Metro will operate service on Madison Street as RapidRide G Line.

SDOT and King County Metro are currently working to make RapidRide investments to multiple corridors as part of SDOT's Levy to Move Seattle Transit-Plus Multimodal Corridor Program and King County Metro's RapidRide program.


Check out this video for an overview of the project!

What to expect during construction

Construction will be disruptive. You can expect to see and hear construction activities throughout the corridor during the duration of work. Construction impacts will include:

  • Noise, dust, and vibrations
  • Nighttime and weekend work, as needed
  • Pedestrian detours
  • Temporary utility shut-offs
  • Disruptions to daily commute, including traffic detours and temporary driveway, road, and lane closures

Anticipated Construction Upgrades

  • Repaving the street and building new bus platforms in the roadway
  • Placing new bus shelters and other station amenities
  • Relocating overhead power lines as needed
  • Moving some utilities underground
  • Installing new traffic signals
  • Putting in new drainage
  • Re-channelizing the street in some locations
  • Building new, or upgrading existing, curb ramps
  • Landscaping and final construction activities

Proposed Construction Timeline

  • Early 2021: We'll select a contractor to build the project. After a contractor is selected, we'll know more on the following:
    • Work schedule and working days
    • Construction sequencing
    • Traffic control plans (e.g. intersection, road, and side street closures and detours)
  • As soon as spring 2021: Anticipated construction start
  • We expect construction to take about 30-36 months to complete

Learn More

Sign up and feel free to contact us to learn more about the project and provide input.

  • Text updates: Text "Madison" to 33222 to receive project alerts
  • Email updates: Sign up using this form (A vendor contracted by the City of Seattle processes the information you provide. We recommend you check the vendor's privacy policy for details about information collection and use.)
  • Contact us: Email or call 206-484-2780

Está información es acerca del sistema de autobuses rapid transit de la calle Madison (Madison Street BRT). Para más información acerca del proyecto o para solicitar servicios de intérpretes, por favor llamar al teléfono del proyecto al 206-484-2780 o por correo electrónico

此信息是有關麥迪遜街的快速交通系統(麥迪遜街BRT) 想了解有關此工程的更多信息,或需要翻譯服務,請聯繫206-484-2780或電郵

이것은 매디슨 가의 급행 버스 체계 (Madison Street BRT) 에 대한 정보 입니다. 이프로젝트에관한 정보를 더 원하거나 통역 서비스를 요청하려면206-484-2780 이나 로 연락해 주세요.

Warbixintani waxay ku saabsan tahay Baska Deg-dega ee Waddada Madison (BRT Waddada Madison). Warar intaa ka badan oo ku saabsan mashruuca ama inaad weydiisato adeeg turjubaan, fadlan soo wac telefoonka mashruuca  oo ah 206-484-2780 ama email

यह जानकारी मैडिसन स्ट्रीट बस रैपिड ट्रांजिट (मैडिसन स्ट्रीट BRT) के बारे में है। परियोजना के बारे में अधिक जानकारी के लिए, या भाषांतर सेवा का अनुरोध करने के लिए, कृपया प्रोजेक्ट फोन 206-484-2780 पर कॉल करें, या पर ईमेल करें।

Đây là thông tin về Xe Buýt Vận Chuyển Nhanh Đường Madison (Madison Street BRT). Để biết thêm thông tin về dự án hoặc để yêu cầu thông dịch, xin gọi điện thoại của dự án ở số 206-484-2780, hoặc gửi thư điện tử đến

Milestones and Schedule

Jan 2013 – May 2014 Project scope defined
Jun 2014 – Apr 2015 Developed and analyzed concept design alternatives, began community engagement
May 2015 – Oct 2015 Refined concept design with community engagement
Nov 2015 Finalized and shared draft concept design
Feb 2016 City Council approved concept design to move forward (also called Locally Preferred Alternative)
Feb – May 2016 Validated cost assumptions from concept design before beginning early design
Spr/Sum 2016 Community engagement on early design, including individual meetings, community briefings, and a series of open houses in August
Jan – Feb 2017 Met with property and business owners to discuss construction options and parking and loading needs
March 2017 2 public meetings (March 9 and 15) and an online open house to share latest project design and get public feedback
Spr/Sum/Fall 2017 Continue design process; continue working with property owners, businesses, and residents to complete construction phasing plan; environmental review
Feb – Mar 2018 SEPA Determination of Non-Significance comment period (February 25 through March 1); SEPA Appeal Period (March 1 through March 8)
Summer 2020 Received the final Readiness and Risk Report from the Federal Transit Administration 
Late summer 2020 Final design
By late 2020 Secure Federal Small Starts Grant and finalize funding agreements with Sound Transit and Seattle City Council
Spring 2021 Construction anticipated to start and take about 30-36 months to complete
2024 Madison St BRT service begins (as RapidRide G Line) 


This project is partially funded by the voter-approved Levy to Move Seattle, the voter-approved Sound Transit 3 (ST3) package, and state and federal grants. We are pursuing Federal Transit Administration funding to be able to deliver this project. The project budget is about $133.4 million. This was increased due to FTA requiring additional contingency funding.  

Materials Library

August 2020

February 2020

January 2020

November 2019

July 2019

March 2019

October 2018

July 2018

February 2018

NEPA Documented Categorical Exclusion Appendices:

January 2018 

Fall 2017

Summer 2017 

Spring 2017

March 2017

February 2017

January 2017

November 2016

August 2016

July 2016

January 22, 2016 City Council Meeting 

November 16, 2015 Open House

October 2015

July 2015

May 2015 Online Survey Results In May, the Madison Street BRT project hosted an online survey to seek input on: BRT design options, routing, terminals, and station location priorities for transit service and capital investment design concepts for a Central Area protected bike laneThe results of the survey can be found here.

May 2015 Open House

Roll plots (*Draft concepts for analysis purposes - NOT final designs*) 


January 2015 Online Survey

November 20, 2014 Open House

September 30, 2014 Open House

September 2014 - Stakeholder Outreach