WSDOT - Contract Ad and Award - Project Information

I-90, SR 18 I/C to Deep Creek - Interchange Improvements & Widening Project


  • Contract Number: 9572
  • Interested Parties List:
    If you are interested in participating in this project, add your firm to our email list to receive future notices about this project.
  • For additional information on this project, please direct your inquiries to the Connecting Washington Design Project Engineer:
    Mark Allison, P.E.
    Phone: (206) 440-4578

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Short Listed Submitters

Short List Letter (pdf 162 kb) - Posted 11/23/2020

Procurement Update

Submitters List

RFQ Addenda


  • Q&A 1 (pdf 125 kb) - Posted 7/13/2020
  • Q&A 2 (pdf 111 kb) - Posted 7/22/2020
  • Q&A 3 (pdf 113 kb) - Posted 8/27/2020

Voluntary Submitters Meeting

Request for Qualifications

Project Information Available

Last Updated: November 23, 2020