• Project

I-90 - Snoqualmie Pass East - Cabin Creek Interchange to West Easton Interchange (Phase 3)

Project overview

Phase 3 is part of a 15-mile corridor improvement project to improve safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity. We will increase traffic capacity and improve safety by adding a new lane in each direction, replacing concrete pavement, stabilizing rock slopes, building wildlife crossings, improving sight distance and traffic safety and improving traffic management technology systems.

Fall 2021 - Fall 2025
Project status
$335 Million

What to expect

During construction in 2022, eastbound traffic be diverted along the detour route. Minor delays are expected. 

Phases 3 and 4 of the I-90 Snoqualmie Pass East project widens I-90 from four to six lanes, stabilizes rock slopes, builds bridges, adds truck-climbing lanes, straightens curves and connects wildlife habitats.