Route 40 - Transit-Plus Multimodal Corridor

October 28, 2020

Making bus trips faster, more reliable, and improving safety

What's happening now?

In August and October 2020, we met with Seattle's Bicycle, Transit, Pedestrian, and Freight Advisory Boards virtually to discuss the Route 40 TPMC project and learn what suggestions and concerns they had. The presentation slides we used for each board are in our Project Materials section below. We're now using community, operator, and modal board feedback, along with traffic data collected in late 2019 and early 2020, to determine which project ideas to continue analyzing for the design process. 

We also hosted a virtual meeting on Tuesday, June 30th at 5 PM. Thank you to the approximately 40 people who were able to attend, especially Councilmember Dan Strauss for providing opening remarks! You can view our presentation video or look at our PowerPoint slides. We also compiled frequently asked questions and our answers to questions from our virtual meeting, which you can access here.

Project Overview

Partnering with King County Metro, we plan to make improvements to this vital corridor.

Improvements made as part of the Transit-Plus Multimodal Corridor may include:

  • Reduce peak transit travel times during peak hours by 5% to 10%
  • Improve service reliability by:
    • Making the time between buses more consistent
    • Helping ensure that no matter the time of day, trips take about the same amount of time

Route 40 corridor improvements were first identified as part of the Levy to Move Seattle and King County Metro's METRO CONNECTS program. Based on results of the 2018 Levy Workplan Report, Route 40 will not be transitioned to RapidRide during this project. However, improvements will be designed to align with potential future RapidRide expansion.

Route 40 Background

With 3 million annual rides, King County Metro's Route 40 has the third-highest ridership of all their bus lines. Running north to south, Route 40 is 13.5 miles long and passes through the neighborhoods of Northgate, Crown Hill, Loyal Heights, Ballard, Fremont, South Lake Union, Downtown Seattle, and Pioneer Square.

Project Map

Map of project area of Route 40

See more on the RapidRide program update.

See more on the comprehensive assessment of the Levy to Move Seattle.

Other Projects Along This Route

SDOT and Metro are focusing many investments along the Route 40. Our project team is in close coordination with the following projects: 

Project Materials

Route 40 Evaluation Framework Memorandum (February 2020)

Project fact sheet (June 2020)

Project fact sheet (June 2020 - Arabic)

Project fact sheet (June 2020 - Spanish)

Seattle Bicycle Advisory Board presentation (August 2020)

Seattle Transit Advisory Board presentation (August 2020)

Seattle Pedestrian Advisory Board presentation (October 2020)

Seattle Freight Advisory Board presentation (October 2020)


This project is being funded by the 9-year Levy to Move Seattle, approved by voters in 2015 to improve safety for all travelers, maintain our streets and bridges, and invest in reliable, affordable travel options for a growing city.


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