I-5 - SR 161/SR 18 Triangle Improvements - Program phase maps

In 2003 and 2005 the state Legislature allocated $112 million for interchange improvements, which resulted in the phase 1 ramps that were completed in summer 2012.

The state Legislature provided $85 million for phases 2A and 2B as part of the 2015 Connecting Washington funding package. WSDOT plans to build phase 2A and as much as possible of phase 2B between 2023 and 2027.

Phase 2A - 2023-2027

A map showing new ramps and roundabouts for the southbound I-5, SR 18 and SR 161 Triangle area.

Phase 2 B - 2023-2027

A map showing future ramps from northbound I-5 to eastbound SR 18.