I-90 Ramp Project

The City of Snoqualmie is entering an agreement with the Washington State Department of Transportation (WSDOT) to construct an interim on-ramp from southbound Snoqualmie Parkway onto westbound Interstate 90 (I-90) to increase safety and traffic flow. The onramp will used during the period prior to the commencement of the I-90/SR 18 Interchange Improvement Project.

WSDOT has completed preliminary design plans for the “I-90 Ramp Project.” The existing signal-controlled right turn lane will be modified to create a free right turn protected by a traffic island. The Scale No. 25 weigh station will be closed to serve as a continuation of the on-ramp. Construction is scheduled to begin in mid-October 2019 with completion by the end of the year, weather permitting. 


The overall investment will be approximately $1.2 million to be divided by a 50/50 match between the City of Snoqualmie and WSDOT. 


Week of September 3, Bid Opening
Week of September 30, Contract Execution
Mid-October, Commencement of Construction
December 31, Substantial Completion (weather dependent)


Agreement (unsigned version)
Exhibit A - Map
Exhibit B - Cost Estimate
Exhibit C - Pavement Marking Plans
Exhibit D - Milestones


Auxiliary Ramp Pavement Markings (Preliminary)
Auxiliary Ramp Detour during Construction

  1. Mark Hofman

    Community Development Director
    Phone: 425-888-8007