The Idaho Transportation Department will begin shifting traffic in the Interstate 15 work zone between Northgate and Fort Hall over the next week. The shift will take several nights to complete and require closing ramps at both interchanges.
Northbound traffic will shift to the newly completed lanes. Drivers heading north will have three lanes instead of two lanes to travel. Southbound traffic will remain in place.
During the traffic shift, motorists can expect:
• The northbound on-ramp at the Northgate Interchange (Exit 73) will close between 7 p.m. on Saturday, May 16, and 2 p.m. on Sunday, May 17.
• This same on-ramp will close again between 7 p.m. on Monday, May 18 and 6 a.m. on Tuesday, May 19.
• Intermittent traffic shifts and northbound on-ramp closures will be taking place at the Fort Hall Interchange (Exit 80) on Monday, May 18. Exit 80 ramp closures are expected to last up to 30 minutes at a time.
Construction is anticipated to be completed in 2027. When finished, I-15 will be three lanes in each direction between Northgate and Fort Hall. The project will increase capacity and improve safety on I-15 to serve East Idaho’s growing transportation volumes for years to come.
The safety of motorists and construction crews is ITD’s top priority during construction. When driving through the work zone, please stay alert, follow work zone signage and drive the posted speed limit.
To sign up for project updates:
• Visit the project website: itdprojects.idaho.gov/pages/i15northgatetoblackfoot
• Call: 208-252-5553
• Email: info@pocatellotoidahofalls.org