Overview
ITD is constructing improvements to I-84 between the Centennial Way and Franklin Road interchanges in Caldwell.
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- Widening I-84 to three lanes in each direction with auxiliary lanes between interchanges.
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- Replacing the 10th Avenue Interchange.
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- Removing one westbound on-ramp at the 10th Avenue Interchange.
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- Updating the pedestrian overpass.
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- Building a soundwall along Hannibal Street.
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- Adding a traffic signal at the westbound ramps at the Centennial Way Interchange.
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- Click here to see what this project includes.
Contact us
Email: 84CORRIDOR@itd.idaho.gov
Call: (208) 334-8002
Sign up for construction updates
Watch the first I-84 Corridor Monthly Update of 2026!
New year, new updates on the I-84 Corridor! Matt Kreizenbeck is back with the I-84 Corridor Monthly Update for January.
This month’s video looks ahead at what to expect across the corridor. Whether you commute daily or travel through the area occasionally, this update will help you plan ahead as we move into 2026.
Watch the video to learn:
- What’s ahead in 2026.
- When and where to join the upcoming I-84, SH-44 to Centennial Way public meeting.
- How to prepare your vehicle for winter driving.
Free-running right-turn lane closure (Feb. 9–13)
The free-running right-turn lane from 10th Avenue to the I-84 eastbound on-ramp will close Feb. 9-13. This closure will give crews the space they need to run new wiring under the road for the traffic signal.
What to expect:
- The free-running right-turn lane from 10th Avenue to the I-84 eastbound on-ramp will close Monday through Friday, Feb. 9–13, from 7:30 a.m. to 5:00 p.m. each day.
- 10th Avenue will remain open with one lane in each direction between the interchange ramps.
- Motorists can still access the on-ramp by making a standard right turn at the traffic signal.
Please slow down and watch for crews and changing traffic patterns in the work zone.
Current Traffic Impacts
- View the latest email update.
- Please plan for nightly lane closures over the next several months as crews widen I-84 in Caldwell.
- 10th Avenue westbound loop ramp is closed until Summer 2027. Click here to view the detour map.
- Frontage Road: one way traffic until 2027. Click here to view the map.
- Wide loads are restricted on ramps. Check Idaho 511 for current width restrictions.
This Project Includes:
- Widening I-84 to three lanes in each direction with auxiliary lanes between interchanges.
- Replacing the 10th Avenue Interchange.
- Removing one westbound on-ramp at the 10th Avenue Interchange.
- Updating the pedestrian overpass.
- Building a soundwall along Hannibal Street.
- Adding a traffic signal at the westbound ramps at the Centennial Way Interchange.
- Click here to see what this project includes.
What to expect during construction
- All lanes of l-84 will be open in both directions during the day.
- 10th Avenue westbound loop ramp will be closed until summer 2027. Click here to view detour map.
- Overnight closures and lane restrictions will be necessary on I-84.
- Extended ramp closures at the Centennial Way and 10th Avenue interchanges (Exits 27 and 28) will occur.
- One way traffic on Hannibal Street and Frontage Road until 2027. Click here to view map.
- Access to local businesses will be open, but your route may change.
What will Centennial Way to Franklin Road look like once completed?
TECM funding
This project is being 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.
The I-84 corridor is one of 13 approved TECM corridors in the state. Funding for the construction phases on this corridor will be determined based on project readiness and funding availability.
Other Projects in the Area
Click the map to find more information about nearby construction projects, or contact your local agency below:
- Idaho Transportation Department
- I-84 Karcher Interchange Project | (208) 377-9688
- SH-55: Farmway to Middleton | (208) 377-9688
- Highway District 4:
- Farmway/Ustick Roundabout Project | (208) 454-8135
- City of Caldwell:
- Linden and Ward Roundabout | (208) 377-9688
- City of Nampa:
- Middleton Road Culvert Work | (208) 465-2221
Downloads & Resources
Contact the project team
If you have questions or comments about this project, contact the project team at 84corridor@itd.idaho.gov or 208-334-8002. You can also text 84CORRIDOR to 1-866-483-8422.
Join the project mailing list
Stay up to date with important information and milestones for this project.