I-90 - Medical Lake Interchange Improvements

Project news

The SR 902 Interchange Reconstruction project is located at the existing Highway 902 Interchange at exit 272 along I-90. The project includes the construction of a new parallel bridge over I-90 and three multi-lane roundabouts. The intersections at both ramp terminals will be converted into multi-lane roundabouts. In addition, the existing intersection of SR 902 and Geiger Boulevard to the north of the westbound ramp terminal will also be converted to a roundabout. Each of the roundabouts will be built in phases. This will allow people driving, walking, or using a bicycle to move through the area without significant closures at the interchanges during construction. There will also be several modifications to three of the four ramps. The westbound off-ramp will include modifications to the length of the ramp to increase safety. The eastbound off-ramp will be realigned to provide a bus-only lane directly into the recently opened Spokane Transit Authority (STA) facility adjacent to that ramp. The eastbound on-ramp will be widened to accommodate an additional lane for a future ramp metering system. Some closures will be required for short durations during the construction of the eastbound ramps.

For people using bicycle or people walking and rolling (assistive devices, wheelchairs), a shared use path will be constructed to connect to the STA facility on the south side of I-90. The shared use path will also connect into Spokane County's path that will be constructed along Geiger Blvd to the north of I-90.

Needs & benefits

The existing ramp terminal and intersection at SR 902 currently see traffic volumes that exceed their ability to function properly. With the addition of the new Amazon fulfillment center, the congestion at these locations will continue to deteriorate and back up traffic in the area. The addition of the roundabouts will accommodate the increased traffic and allow for the interchange to operate more efficiently over the next 10-20 years. The modifications to the interchange on and off-ramps will increase the safety of the interchange.


The project will open for bidding in late March 2019. Construction will begin in early summer of 2019 and complete late fall of 2019.


Financial Data for PIN 609047C
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $18,016
Total $18,016


Mark Allen, project engineer
WSDOT Eastern Region
2714 N. Mayfair
Spokane, WA  99207
(509) 324-6232