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I-5 - SR 161 - SR 18 Triangle Interchange Vicinity - Improvements

Project overview

This project has been suspended. There is no timeline for when it may resume.

Timeline
2010-TBD
Project status
Pre-construction
Funding
$85 Million

What to expect

This project has been suspended, travelers should not expect to see construction-related delays in the area.

This map shows the locations of improvements planned for the I-5/SR 161/SR 18 interchange in Federal Way, WA.

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This project has been suspended. In 2010, we began a long-term program to improve mobility in Federal Way around the I-5/SR 18/SR 161 interchange, known as the “Triangle.” Traffic in the area has increased beyond what the original interchange was designed to handle, with about 293,000 vehicles moving through this interchange every day. Frequent backups, particularly during peak travel times, are common.

In 2012 we completed flyover ramps between I-5 and SR 18. There is no timeline for completing additional work in this area.