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I-90 - Snoqualmie Pass East - Keechelus Dam Vicinity to Cabin Creek Interchange (Phase 2)

Phase 2 and 3 are part of a 15-mile corridor improvement project to improve safety and reliability and reduce congestion on I-90 from Hyak to Easton.

I-90 des vis thumb nail Design Visualization of the I-90 Snoqualmie Pass East project.


January 2015

Why is WSDOT improving safety and reliability on I-90?

Phase 2 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. 

On an average day, 28,000 vehicles travel over Snoqualmie Pass and traffic numbers double on weekends and holidays. Traffic volumes are expected to increase 2.1 percent every year, reaching an average of over 41,000 vehicles per day by 2030.

Construction on Phase 2A is underway and started summer 2015. This phase includes the next 2 miles from Keechelus Dam to the Stampede Pass interchange and the first wildlife over crossing in the corridor near Price Creek. WSDOT is scoping and planning Phase 2B, which includes the next 2 miles from the Stampede Pass to Cabin Creek interchanges.

The End Result

WSDOT will continue to increase capacity and improve safety by:

  • Adding a new lane in each direction
  • Replacing concrete pavement
  • Stabilizing rock slopes
  • Building wildlife crossings
  • Straightening the roadway 
  • Adding new chain-up area

Project Benefits

  • Safety. WSDOT will improve the driving surface on I-90 by replacing the concrete pavement, straightening the roadway, and adding new chain-up areas.
  • Congestion Relief. WSDOT will increase capacity by 50 percent in each direction to accommodate projected traffic volumes for the next 20 years by adding a lane in each direction.
  • Environmental. WSDOT will minimize impacts to the environment and improve movement of wildlife.

What is the project timeline?

  • Summer 2015 - construction begins on Phase 2A
  • Fall 2019 - construction completed on Phase 2A

Financial Information

Financial Data for PIN 509090O
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $107,693
Pre-Existing Funds (PEF) $0
Total $107,693

WSDOT is using $108 million of project savings from Phase 1 to design, purchase right of way and construct Phase 2A. In 2015, the legislature passed a new revenue package called Connecting Washington, which provides $426 million to fund the remaining eight miles of the 15-mile corridor from the Stampede Pass Interchange to Easton, which includes Phase 2B and Phase 3. 

How can I get more information?
Scott Golbek, WSDOT project engineer (Phase 2A)
Phone: 509-577-1880
Andrew Byrd , WSDOT project engineer (Phase 2B and Phase 3)
Phone: 509-577-1631

Meagan Lott, WSDOT communications
Phone: 509-577-1618

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