Community Planning

Southwest Corridor Light Rail Project

SW Corridor Light Rail logo

What's New?

Cover: SW Corridor DEISDraft Environmental Impact Study (DEIS) Available for Review
Route alternatives for a new MAX light rail line serving southwest Portland, Tigard and Tualatin were studied in a Draft Environmental Impact Statement. The study is available for review and comment.

Your comments can improve the project and help determine which route is pursued for further study, design and funding. The plan is also available in Portland, Tigard and Tualatin libraries. To read the study, comment or for more information, please visit Metro's Website.

Four Ways to Comment through July 30:

  • Online: 
  • Email:
  • Mail: Southwest Corridor DEIS, 600 NE Grand Ave., Portland, OR 97232
  • Attend a Meeting:
    • Housing, Transit and You (en Espanol)
      » Tuesday, July 10, 2018, 6:30 to 9 p.m. 
      » St. Anthony’s Church (9905 SW McKenzie St) 
      Learn about transit and housing justice. Free food, childcare, and interpretation in English, Somali and Arabic available 
    • Tigard/Tualatin Open House
      » Thursday, July 12, 2018 - 6 p.m. to 8:30 p.m.
      » Tigard Public Library Burgess Room and Technology Room
      Residents and members of the public are encouraged to attend these meetings to learn about the project and voice public comment. 
    • Steering Committee Public Hearing
      » Thursday, July 19, 2018 - 6 p.m. to 8:30 p.m.
      » Tigard Town Hall 
      Residents and members of the public are encouraged to attend these meetings to learn about the project and voice public comment. 

Project Schedule/Key Milestones

SW Corridor Selection Process

March 2018: Staff recommends an initial route proposal after evaluating potential impacts through the Draft Environmental Impact Study.

June 15- July 30, 2018: Publication of the Draft Environmental Impact Statement (DEIS), a study that discloses impacts and benefits of possible route options for light rail. Made available to the public for comment for a 45-day period.

June 25, 2018: The Citizen Advisory Committee (CAC) meets to discuss a Preferred Alternative (PA) route recommendation to the Steering Committee.

July 19, 2018: Steering Committee holds a Public Hearing at Tigard Town Hall to hear testimony from residents regarding the route alignment options.

July 30, 2018: The Citizen Advisory Committee (CAC) makes a route recommendation to the Steering Committee.

August 13, 2018: Steering Committee recommends a Preferred Alternative (PA) light rail route.

September 2018: Local Jurisdictions (Tigard, Portland, Beaverton, et al) and TriMet approve the Preferred Alternative (PA) final light rail route.

October 2018: Metro Council adopts the Preferred Alternative (PA) final light rail route. The Preferred Alternative (PA) route is added to the Regional Transportation Plan (RTP).

What happens once a Preferred Alternative (PA) is chosen? 

  • All other alignment options will no longer be studied
  • TriMet will begin advanced design work in order to avoid or minimize adverse impacts and develop detailed cost estimates
  • Environmental review will continue and address issue brought up in the comment period
  • A funding plan will be put in place that could include a regional funding vote in 2020 to help pay for some of the costs of the project
SW Corridor Long Term Timeline

The Southwest Corridor Plan is a comprehensive planning effort to help address the impacts of future growth while preserving neighborhoods and creating more great places. 

In July 2013, the Southwest Corridor Plan Steering Committee directed TriMet to undergo a broad update of existing transit service in the corridor, as a first priority for transit. They also identified roadway, bicycle, pedestrian, parks, trails and natural area projects that support local community visions. 

Project partners in the region are seeking greater input from communities along the planned corridor to learn more about local travel patterns, ways to leverage future light rail with better pedestrian, bicycle and vehicle connections, improving access to parks and green space, and opportunities to locate customers closer to the area's retail centers.

Meanwhile, staff will be working on a preferred package of high capacity transit investments, including motor vehicle, bicycle and pedestrian connections to proposed light rail stations. Click here for FAQs about this project and its impacts on Tigard.

Project Documents Archive

Staff Contact
Lauren Scott
Community Engagement Coordinator
503-718-2595 |

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Southwest Corridor Plan - Metro


SW Corridor FAQs

Initial Route Proposal  adobe icon
Light Rail Alignment Options  adobe icon
Tigard Route Options  adobe icon

What is a Draft Environmental Impact Statement (DEIS)?
An Environmental Impact Statement (EIS) shares information about the anticipated effects of a major infrastructure project (like a new MAX light rail line) with the public, government agencies and decision makers. The EIS is made of two components, the Draft EIS and the Final EIS. In between the preparation of each document, there is a public comment period and decision on the route.

Because the proposed MAX line will need federal funding, the Federal Transit Administration is conducting an EIS in partnership with Metro, TriMet and other project partners. The purpose is to understand and identify potential risks and benefits before federal funding is made available to build a new light rail line.

What is the Preferred Alternative (PA)?
The Preferred Alternative is a single light rail route chosen for further design, study and funding.Further design, station and Park and Ride locations as well as station access improvements would still need to be studied and refined.

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