12/19/2022

Work accomplished in 2022 Work began on the I-90/SH-41 Interchange in August 2022. This year the contractor focused on I-90 and the eastbound bridges.

I-90 Work Eastbound I-90 Placed temporary pavement and barriers to shift traffic. Built drainage area near eastbound off-ramp. Built a portion of the new eastbound I-90 off-ramp. Westbound I-90 Widened the I-90 westbound on-ramp to create room for a work zone.

Bridge Work Crews began work on three permanent eastbound bridges and one temporary bridge. As a reminder, ITD will build six permanent bridges and two temporary bridges. Bridge work for 2022 included: Pile driving for the bridge foundations (a steel pipe is driven into soil until it reaches a hard layer to support the bridge). Building abutments (part of the bridge support). Demolished sections of the I-90 eastbound bridge.

Temporary shoring for abutment work

Driving pile approximately 50 feet into the ground

Look ahead to 2023

Next year the contractor will:  Continue to build the I-90 eastbound bridges. Work on the temporary bridge over SH-41. Shift traffic on I-90 to the outside to construct the new lanes and bridges in the median. Begin work on Seltice/SH-41 alignment.

Rendering of the new SH-41 Interchange

Work on this project is expected to be completed in the summer of 2025. When complete: The new interchange design will efficiently move more traffic through the area. The I-90 westbound “loop” on-ramp will no longer curve and all ramps will come together at a single point and be controlled by a traffic signal. Upgrades to the interchange will include replacing existing bridges, adding new bridges, realigning on- and off-ramps and constructing capacity for future interstate expansion. ITD will also improve the SH-41 and Mullan Avenue intersection and local connectivity south of the interchange. Grade separations and improvements to the SH-41 Trail and Centennial Trail will provide safer travel for bicycles and pedestrians.

‌ ‌ ‌ ‌