NAMPA – Interstate 84 will be closed in both directions under the Karcher Interchange Wednesday night from 10 p.m. to 5 a.m. This closure will allow crews to safely pour the concrete that will support the third westbound lane on Karcher Road (State Highway 55).
To follow the westbound detour:
- Exit I-84 at the Northside Interchange (Exit 35).
- Travel north on Northside Boulevard.
- Turn left onto Karcher Road.
- Travel west until you reach the Karcher Interchange westbound on-ramp.
- Use the Karcher Interchange westbound on-ramp to merge back onto westbound I-84.
To follow the eastbound detour:
- Exit I-84 using the Karcher Interchange eastbound off-ramp (Exit 33).
- Cross Karcher Road.
- Use the eastbound on-ramp to merge back onto I-84.
Click here to view the detour maps.
These improvements are part of a larger effort to improve traffic flow and safety in the area.
Project improvements include:
- Adding a free running right-hand turn at the westbound off-ramp
- Paving a third westbound lane on Karcher Road from the westbound off-ramp to Sundance Road
- Reinforcing the Karcher Interchange and Indian Creek Bridges to support the new lane
- Updating signal equipment and adding a pedestrian flashing beacon at the eastbound on-ramp
- Building a separated mixed-use path on the north side of Karcher Road
The I-84, Karcher Interchange project will enhance safety and reduce congestion at the interchange and along Karcher Road in Nampa. Construction is expected to be completed in the fall of 2025.
Stay informed by signing up for email and text alerts by texting 84CORRIDOR to 1-866-483-8422 or visit itdprojects.idaho.gov/pages/karcheric. For questions, contact the project team at (208) 334-8002.
More information can be found at https://itdprojects.idaho.gov/pages/karcherich.