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ITD is making plans to improve I-84 between Caldwell and the Karcher/Midland Interchange. Work in this area is in multiple stages of study and design.

El Departamento de transportación de Idaho está haciendo planes para mejorar el Interestatal 84 entre Caldwell y el intercambio de Karcher. El trabajo en esta área se encuentra en multiples etapas de estudio y diseño. Manténgase Informado: Para más información y para recibir una hoja de inforamación, por favor llame 208-334-8152

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Drive Idaho podcastAsset 2
October 17 Noise Wall Meeting
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I-84

Environmental study and traffic analysis

The Idaho Transportation Department is evaluating improvements to Interstate 84 between Caldwell and Nampa. This is part of a plan to invest more than $300 million into I-84 in Canyon County over the next several years.

This project includes a traffic study and environmental evaluation. ITD is considering potential impacts to adjacent properties, minority populations, noise, floodplains, wetlands and many other factors. Public input is a key element of the study.

Planning for the future

ITD has developed long-term alternatives for improving the section of I-84 between Centennial Way and Franklin Road in Caldwell.

Comment on future plans for I-84 in Caldwell

Advancing design work (Caldwell to Nampa)

In 2018, the Federal Highway Administration accepted a proposal from ITD to complete the environmental study in smaller parts. This allowed ITD to move forward with designing improvements between Franklin Road and Karcher/Midland Road.

ITD is designing an additional interstate lane in each direction between Franklin Road in Caldwell and Karcher/Midland in Nampa. To add lanes on I-84, the Middleton and Ustick overpasses must be replaced.

More information will be available at an open house later this summer.

Request email updates

Funding

ITD has allocated more than $300 million in state, federal and GARVEE funds to improve I-84 in Canyon County. $150 million of this funding has been allocated to the section of I-84 between Caldwell and the Karcher Interchange in Nampa.

This funding will cover the environmental study and traffic analysis for the entire corridor. It also will cover design and construction between Franklin Road and Karcher. Additional funding will be needed to design and construct the improvements west of Franklin Road.

Downloads & Resources

Fact SheetAsset 4
I-84 Noise Wall Meeting - October 17, 2019Asset 4
June 2019 Open HouseAsset 4
January 2019 Open HousesAsset 4
June 2018 Open House DisplaysAsset 4
I-84 Corridor FundingAsset 4
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Asset 5
October 2019

Property owners approve three of four proposed noise walls near I-84 expansion project in Canyon County

The Idaho Transportation Department has collected the votes and is making plans for three new noise walls along Interstate 84 as a part of a multi-year study of improvements in Canyon County.

ITD proposed four locations for noise walls. ITD invites members of the community to ask questions about the project on Oct. 17 at the Caldwell Best Western (908 Specht Ave.) anytime between 4:30 p.m. and 6:30 p.m.

Map of Noise Walls Learn More
Asset 5
June 19, 2019

Future plans in Caldwell

ITD held an open house on June 19 to review and comment on the future plans to I-84 from Centennial Way to Franklin Road interchanges in Caldwell.

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Asset 5
June 19, 2019

Facebook Live Video at the Caldwell Open House

Jake Melder with ITD was Live at the Caldwell Open House.

Watch Now!
Asset 5
Mid-2018

Advancing design work

In 2018, the Federal Highway Administration accepted a proposal from ITD to complete the environmental study in smaller parts. This allowed ITD to move forward with designing improvements between Franklin Road and Karcher Road.

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Jan. 22, 23

January 2019 Open House

ITD held open houses on January 22 and 23 to review and comment on the plans to widen I-84 from Franklin Road Interchange in Caldwell and the Karcher Interchange in Nampa.

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June 2018

Community Open House

ITD held community open houses on June 26, 27 and 28 to identify issues and needs to be addressed in the study.

Open house displays Open house maps
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Late 2017

Project Kickoff

ITD began conducting a traffic study and environmental analysis.

Project
Updates

What is happening now?

Property owners approve three of four proposed noise walls near I-84 expansion project in Canyon County. Attend a drop-in meeting on Thursday, October 17 to learn more. 

What is next?

ITD continues moving forward with design work between Franklin Road and Karcher Road. The public will have an opportunity to comment on ITD’s progress at an open house in early 2020.

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