Design work on the Southwest Corridor Light Rail Project was paused in 2020 after voters rejected a local funding measure for multiple transportation improvements. In early 2022, Metro, TriMet and the Federal Transit Administration completed the Final Environmental Impact Statement (FEIS) and issued a Record of Decision (ROD) to ensure the project is eligible for future federal funding. See Metro’s project website to access to these documents.

Overall Project Improvements
Major Structures

Overhead structures are required where there are existing freeways, streets and railroad tracks that the trackway must cross over. Some structures along the trackway will be major visual features in the community. The design of these structures will be guided by the overall project principles to better integrate with the community. Design work for these structures will take place over the next few years.


Major structures map

Major structures

Overhead structures

I-405 Bridge

Avoids impacts to vehicle circulation around this area and makes bus and light rail connections efficient with an easy and reliable connection to the Portland Transit Mall.

I-405 bridge


Barbur Transit Center Bridge

Avoids impacts to vehicle circulation around this area and provides ODOT flexibility for any future changes to the freeway interchange.

Crossroads Bridge


99W Crossing

Avoids traffic impacts at this critical intersection. These improvements shift the I-5 off ramps, but do not reduce lanes on Pacific Hwy/99W.

99W Crossing


Highway 217 Bridge

Connects light rail from Tigard Triangle to Downtown Tigard. While currently not part of the project scope, an integrated multi-use pathway is a desired active transportation component. Both TriMet and the City of Tigard agree the multi-use pathway is a project betterment and will partner to be co-applicants for funding.

Highway 217 Bridge

Viaduct Replacement

The Southwest Corridor Light Rail Project has committed to replacing the timber supported, 1934 Newbury and Vermont viaducts along Barbur Boulevard. The new structures are designed to carry four auto lanes, light rail, and improved bike and pedestrian facilities, creating a better experience for all modes. To protect the nearby natural areas, the viaduct design and construction methods used will minimize impact to the sensitive area, maintaining permeability of this rich and vital east-west habitat corridor and enhancing the view opportunities.


Existing viaducts

Existing viaduct

Existing viaduct


New viaduct cross section

New viaduct cross section

Cross section



Comments or questions?

Call 503-962-2150 or email for more information.



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Project Partners

TriMet Metro ODOT Washington Couty City of Durham City of Portland City of Tigard City of Tualatin