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Project to relieve severe congestion

The Port of Portland and the Oregon Department of Transportation are working on a set of improvements to the I-205/Airport Way interchange. According to ODOT Consultant Christine Egan of JLA Public Involvement, the project staff is considering three possible traffic flow improvements. One alternative — the least expensive — is to install minor traffic improvements, including better signal timing. Alternative 1 would install a free right-turn lane on Airport Way westbound, allowing easier access to the Glenn Jackson Bridge and relieving congestion at the intersection. Alternative 1B would also do this, but add ramp meters to coordinate rush hour traffic. The project is part of a series of traffic improvements called for in the Cascade Station Master Plan. Egan says the cost would be up to $15 million for Alternative 1B.

Following the open house held last month, up to five alternative packages that most adequately address the project’s core purpose and need are to be selected. The ODOT teams will then choose an alternative to advance to Phase 2.

In Phase 2, studies will be conducted on likely effects that each alternative will have on the natural and built environment. ODOT will publish the results of this analysis and seek public input to evaluate this alternative.

To view the alternatives for yourself, go to

To relieve traffic congestion around the entrance to I-405 north on Airport Way, The Oregon Department of Transportation and its Alternative 1B — the most expensive at $15 million — promises to relieve daily bottlenecks around afternoon rush hour. Two other alternatives, both less expensive, were proposed and considered at an open house held last month.
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