Community Planning

Southwest Corridor Light Rail Project

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What's New? 

Southwest Corridor Steering Committee Chose a Preferred Alternative 
On August 13th the Southwest Corridor Steering Committee chose a Preferred Alternative for a new MAX light rail line serving southwest Portland, Tigard and Tualatin. The Committee unanimously chose to continue work on the Initial Route Proposal, the light rail route proposed by project staff in March and recommended (with additional considerations) by the Community Advisory Committee (CAC).

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.

What happens now that a Preferred Alternative (PA) has been 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

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).


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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