Skip Top Navigation

I-5 - 172nd St Street (SR 531 Smokey Point) Interchange Improvements - Project Map

Project location map: The 172nd Street Interchange is located at the I-5 and SR 531 intersection south of Arlington

We will improve access to and from Interstate 5 at State Route 531 (172nd Street NE) by building a new two lane loop ramp, adding turn lanes and widening existing ramps.