Open house held March 21 for new design for 15th Street Interchange in CDA

Drone shot a truck turning off the ramp

The Idaho Transportation Department will host an open house on Tuesday, March 21, to present the proposed design for the 15th Street Interchange in Coeur d’Alene as part of the I-90 corridor study. The study is funded by the Leading Idaho program.

With traffic conditions congested now and volumes expected to double by 2045, ITD is studying I-90 from the Washington state line to Coeur d’Alene to identify improvements to modernize the system, reduce crashes and save drivers’ time.

“We want to thank everyone for coming to the open houses for the corridor study in November,” ITD Project Manager Erika Bowen said. “Back then we were still considering alternatives for the 15th Street Interchange, but now we’re ready to share the plans.”

This open house will focus solely on the 15th Street Interchange. Updates on the overall corridor study will be shared at an open house later this summer, though responses to the most common comments have been published here.

Details for the open house are as follows:

Tuesday, March 21

4 – 7 p.m.

Coeur d’Alene Fire Station 3

1500 N 15th St, Coeur d’Alene, ID 83814

For those not able to attend the open house, the same information will be available on March 21 at An online survey will be available at that link through April 4.

“The interchange has not been upgraded since it was first constructed in 1960,” Bowen said. “We have thoroughly analyzed several solutions since it provides key access to Fire Station 3, Avista Utilities, Cherry Hill Park and major residential areas.”

The study for the I-90 corridor is funded with Transportation Expansion and Congestion Mitigation (TECM) funds as part of Governor Little’s Leading Idaho initiative. The program allows ITD to accelerate project timelines to address rapid growth and build critical infrastructure today that would otherwise take many years to fund and build.

Following the study and public input, the recommended projects will be prioritized and advanced into design and construction as funding becomes available.

If you need special accommodations during an open house, please contact the study team in advance at or (208) 738-4190.

To stay up to date on the I-90 corridor project and improvements to the 15th Street Interchange, visit and sign up for email updates.