Construction begins next week on the I-90/SH-41 interchange

Aerial photo of the I-90 ID-41 interchange in 2020

POST FALLS – The Idaho Transportation Department (ITD) is beginning work to replace and upgrade the interchange at Interstate 90 and State Highway 41 in Post Falls, with impacts to traffic beginning MondayAugust 1.

Construction will be underway until the summer of 2025. Over the next four seasons work will generally shift from I-90 to SH-41 and then to Seltice Way. To learn about the full range of improvements and how to use the future interchange, watch this video.

“The beginning of this project is a significant milestone for ITD and the surrounding area,” said Shannon Stein, ITD project manager. “Once finished, the reconstructed interchange will improve safety, increase capacity, provide better connectivity to SH-41 and position I-90 for future expansion.”

In 2022, crews will work along I-90, begin reconstructing ramps and begin building the new eastbound bridges. Motorists can expect the following impacts:

  • Two 12-foot lanes of I-90 will be open during the day. Shoulders will be reduced to 2 feet.
  • Speed limits will be lowered to 55 mph on I-90 and 25 mph on SH-41 and Seltice Way.
  • Intermittent lane restrictions will occur on I-90 at night (8 p.m. to 5 a.m.). During special events, night work will begin at 10 p.m. Initial efforts include primarily night work.
  • Live traffic impacts will be available for individuals to check at

Construction may be noisy at times and require nighttime lighting or additional closures or delays on roads in the project area.

“It will be important to plan extra time when traveling around the interchange. ITD will communicate regularly throughout construction with those who live, work and commute in this area,” Stein said.

The best way to stay informed is to sign up for email updates by visiting or by calling 866-774-4454.

The $78 million interchange reconstruction is beginning one year earlier than expected, thanks in part to Transportation Expansion and Congestion Mitigation (TECM) funds through Governor Little’s “Leading Idaho” initiative. This deliberate investment of TECM funds allows ITD to accelerate project timelines to address rapid growth and construct critical infrastructure sooner in Post Falls.