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Park Avenue Garage

Milwaukie, Oregon

The TriMet Park Avenue Garage is a 2.5 level park and ride garage that provides a total of 404 parking stalls within approximately 124,000 SF. A multitude of sustainable design strategies were part of the projects design and include a PV solar array that shelters cars on the top most floor, 100% natural ventilation, stormwater collection and treatment, and electric car charging stations. Alliant Systems provided design-build mechanical construction services on the project when it was originally constructed and will be part of the design-build team that will perform the garage expansion in 2024.

Rendering courtesy of GBD Architects

Project Information


Delivery Method



Parking Garage

Project Type

Project Gallery

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