NE 40th Street Interchange
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Project
Location: Redmond, Washington
Client: Washington State Department of
Transportation
Construction Cost: $14.3 million
Wilder’s Role: Prime
Construction Period: 6/99 – 11/00
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Project
Highlights
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Erosion
Control, Stormwater TreatmentThis project involves providing an interchange at NE 40th Street, near the Microsoft Redmond campus. The contract also includes major structure and roadway excavation, the construction of cast-in-place retaining walls, soil nail walls with CIP face panels, a large CIP stormwater detention vault, and associated grading, paving and utilities. First WSDOT project in state to utilize on-site stormwater treatment for sedimentation control. Project start-up was delayed by the discovery of a Red Tailed Hawk’s nest and fledgling activity near a 54 foot by 300 foot vault. Even with the delay, the vault was completed by the end of January 2000, and the entire project is scheduled for completion in November of 2000.
Last updated March 20, 2002
