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

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6 results

Project

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

Timeline: Summer 2022 - Fall 2028
  • Road
  • 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 are increasing traffic capacity and improving safety by adding a new lane in each direction, replacing concrete pavement, stabilizing…
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 2028 - Fall 2031
  • 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
  • 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 is building a diverging diamond interchange and adding two lanes on SR 18 between the interchange and Deep…
Project

I-90/104th Street Vicinity Stream Mitigation

Timeline: Spring 2025 - Fall 2025
  • Road
  • Pre-construction
  • King County
Crews working for WSDOT will realign the stream and grade the channel for Unnamed Tributary to Lake Creek on Southeast 104th Street just south of the city of Snoqualmie in King County. The stream’s culvert will remain as-is during this project’s stream bed work. This project is required to support…

166,800 electric vehicle

registrations in Washington in 2023, up from 114,600 in 2022.

87 wetland compensation sites

actively monitored on 918 acres in 2023.

25,000 safe animal crossings

in the Snoqualmie Pass East Project area since 2014.