ST 2040: Envisioning a World-Class Transit System in Washington State

In February, climate candidate for Seattle Mayor Andrew Grant Houston and I laid out a vision for the Puget Sound region's transportation future in The Urbanist.

March 3, 2021, 11:00 AM PST

By ConorBronsdon @ConorBronsdon

Transit Planning

Credit: Andrew Grant Houston / Via The Urbanist

In February, climate candidate for Seattle Mayor Andrew Grant Houston and I laid out a vision for the Puget Sound region's transportation future in The Urbanist. With major hydro-electric power generation, cars are the largest carbon emissions source in Washington State. To meet the state's climate goals, electric cars can help but with the risks of carbon lock-in, it's essential that transit is prioritized.

"With President Biden’s election, Seattle and Washington State have an opportunity to leverage his planned Build Back Better agenda and $2 trillion plan to build modern sustainable infrastructure and an equitable clean energy future. We can build Washington State’s public transit system and create sustainable, well-paying jobs by leveraging the Biden climate plan’s commitment to investing in sustainable transportation."

To achieve this ambitious goal, we need a plan that reaches beyond the Sound Transit 3 plan and prepares the Puget Sound region for an anticipated 1.8 million new residents by 2050Andrew Grant Houston’s Sustainable Seattle Transit 2040 plan and the broader ST 2040 vision provide a framework to envision such an aggressive investment, enabling the establishment of 15-minute cities in Seattle and throughout the region. 

ST 2040:

  • Connects job centers and as many cities in the three counties as possible;
  • Leaves the system open outside of Seattle to allow local communities to influence the specifics of implementation;
  • Ensures every Seattleite is within one mile of a light rail station; and
  • Creates a massive vision of a transit system that can be built to prepare the Puget Sound region for tremendous regional growth.

As we noted, Seattle is particularly important in this plan: "Perhaps the most crucial part of the ST 2040 plan is investing in developing the transit system of the economic engine and population center of the Puget Sound Region—Seattle. Seattle is the jobs and housing center for the region, and with Andrews’ vision for a Seattle-specific ST 2040 map, we can develop the city sustainably while adding hundreds of thousands of new residents. This plan could also be primarily paid for by federal investment and a tax on major regional polluters."

While some will call this vision overly ambitious and impossible, we believe it is essential to demonstrate what a truly world-class system could look like—to open the Overton window fully for real transformation that can solve the climate crisis:

"Through significant investment in sustainable public transportation in concert with enabling micromobility optionsinvestment in sustainable housing development, and decarbonizing our ports, Seattle and the Puget Sound Region can lead the just transition to a sustainable economy and future for all."

Published on Monday, February 15, 2021 in The Urbanist


Conor Bronsdon is a Seattle based writer and consultant with Olive & Goose. His work has been published in Planetizen, The Urbanist, and by Microsoft Services. You can read more of his writing at

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