Starting Monday, March 3, the Idaho Transportation Department will be making several significant changes to traffic near the Interstate 90 and State Highway 41 Interchange. These changes are necessary to accommodate ongoing construction efforts as ITD nears a major milestone of the project with the completion of the new Single Point Urban Interchange.
I-90 westbound off ramp to get to SH-41
- Closed March 3 through Fall 2025
- Traffic will be detoured to the Seltice Way Interchange at Exit 6. Click here for detour map.
- A temporary signal has been installed at Seltice Way to handle detoured traffic exiting the interstate
On ramp from SH-41 to get onto eastbound I-90
- Closed overnight from 8 p.m. to 5 a.m. from March 3 through mid-March
- Traffic will be detoured west on Seltice Way to the exit 6 eastbound on-ramp.
SH-41 under I-90
- Closed March through mid-April
- Traffic will be diverted to Greensferry Road while crews deconstruct the temporary bridge and work on utilities. Click here for detour map.
Central Avenue
- Closed early March through Fall 2025
- Click here for a map of available business accesses.
Overnight single lane closures on I-90 in both eastbound and westbound lanes throughout the work zone
- 8 p.m. to 5 p.m. March 3 through mid-April
Westbound on ramp for SH-41 traffic
Additional changes to the westbound on-ramp are coming later this spring. Details will be shared as soon as they are available.
“Reconstructing the westbound off-ramp and improving SH-41 is a key part of the project’s success,” said project manager Randy Durland. “We thank the public again for their patience during these closures as crews continue to make significant progress towards the finish line.”
Construction on the new ramp and SPUI is expected to be complete in 2026.
Drivers can use the Idaho 511 system for updated traffic conditions, detours and delays by dialing 511, visiting the website, or downloading the app to your smart device.
To learn more, visit the project website at https://itdprojects.idaho.gov/pages/i90sh41ic, call 208-738-4190, or email info@i90corridor.com.