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Learn about current transportation network improvement and preservation activities throughout the state.

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5 results

Project

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

Timeline: Summer 2022 - Fall 2028
  • Road
  • Pre-construction
  • Kittitas County
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…
Project

I-90 - Snoqualmie Pass East - Hyak to Keechelus Dam (Phase 1) - Complete Fall 2019

Timeline: Spring 2009 - Fall 2019
  • Road
  • Completed
  • Kittitas County
Phase 1 was 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.
Project

I-90 - Snoqualmie Pass East - Keechelus Dam Vicinity to Stampede Pass Interchange (Phase 2) - Complete Fall 2019

Timeline: Summer 2015 - Fall 2019
  • Road
  • Completed
  • Kittitas County
Phase 2 was 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.
Project

I-90 - Snoqualmie Pass East - Stampede Pass Interchange to Cabin Creek Interchange (Phase 4)

Timeline: Summer 2026 - Fall 2029
  • Road
  • Not started
  • Kittitas County
Phase 4 is part of a 15-mile corridor improvement project to increase safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity.
Project

I-90 – SR 18 Interchange Improvements

Timeline: 2022 - 2025
  • Road
  • Pre-construction
  • King County
Growth in Snoqualmie Valley has made the I-90/SR 18 interchange one of the busiest in the state, causing backups during peak times and busy travel weekends. To improve traffic flow, WSDOT will build a diverging diamond interchange and add two lanes on SR 18 between the interchange and Deep Creek.

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.