SERVICE REQUEST

WSDOT, I-90, SR 18 Interchange to Deep Creek Interchange Improvements & Widening

This project constructs a four-lane Diverging Diamond Interchange (DDI) at the I-90 and SR-18 interchange in combination with the widening of SR-18 to four lanes to improve traffic operations, safety, and reduce congestion at the interchange and along the SR-18 mainline. Electrical scope includes permanent signing, sign structures, illumination, temporary and permanent intelligent transportation systems, intersection conflict warning system, and a diverging diamond interchange signal system.

Project Info

Project Name

WSDOT, I-90, SR 18 Interchange to Deep Creek Interchange Improvements & Widening

Category

Completion

2026

City

Snoqualmie , WA

Owner

Washington Department of Transportation

General Contractor

Aecon Group, Inc.

Delivery Method

Design-Build

Sustainability

Awards

ACEC Washington State 2025 Engineering Excellence Gold Award for Complexity

2026 ACEC Washington Engineering Excellence Silver Award

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SERVICE REQUEST

We provide 24 hours, 7 days a week service support and consultation when you need us the most. We are able to support you with any emergency, specialized project, from small work to the ongoing equipment maintenance and operation.

Valley Electric also offers clients proactive predictive maintenance, periodic maintenance programs that ultimately reduce cost and demands, while maintaining stringent quality measures.  We execute routine and emergency maintenance of electrical power systems and equipment.

You can contact our 24-hour electrical service and maintenance department at 1.888.424.7730 (Off hours). During the working hours, 7:00am to 3:30pm, please call 425.322.7403

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