ITD kicks off third construction season at I-90/SH-41 interchange in Post Falls

Post Falls Road ConstructionThe Idaho Transportation Department will reach the halfway point this spring in a four-year reconstruction of the I-90/SH-41 interchange in Post Falls. Motorists can expect several changes throughout the construction zone in 2024.

The 2024 construction season will include reconstructing multiple bridges on Interstate 90 and constructing a temporary westbound bridge over State Highway 41. Crews will continue working on Seltice Way, I-90 and SH-41. Download an overview of 2024 construction activities.

“This is one of the most complex interchanges in the state, with multiple bridges and intersecting roadways,” said ITD Project Manager Shannon Stein. “Our crews have made outstanding progress while keeping the interchange open for daytime commuters.”

Traffic impacts in 2024 will include:

  • Ongoing nighttime closures on SH-41 for the next several weeks during pile-driving.
  • Lane closures on SH-41 and Mullan Avenue by late March or early April.
  • Speed limit reductions (55 mph on I-90 and 25 mph on SH-41, Mullan Avenue, and Seltice Way).
  • Intermittent lane restrictions on I-90 at night (8 p.m. to 5 a.m., and 10 p.m. to 5 a.m. during special events). Two lanes will remain open in both directions of I-90 during the day with reduced shoulder widths.
  • Additional delays, noise, and nighttime lighting when necessary. Live traffic impacts are posted here.

“The work zone will continue to change from day to day,” said Stein. “The best way to stay informed about construction is to sign up for email updates  or by calling (208) 738-4190.”

To learn about the future interchange and how it will function, watch this video.

The Transportation Expansion and Congestion Mitigation (TECM) funds through Governor Little’s “Leading Idaho” initiative has allowed this $78 million interchange reconstruction project to begin earlier than expected. This program has allowed ITD to address rapid growth and build critical infrastructure today that would otherwise have taken many years to fund and build.

Construction is expected to be completed in 2026 and will provide enhanced safety and mobility for motorists in North Idaho.