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Karcher to Franklin Comment Sheet
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In Canyon County, traffic volumes on I-84 are projected to double between now and 2040. ITD recognized this corridor needs attention now, and in response allocated funding for these projects to meet the needs of today and prepare for the future.

See the I-84 Caldwell to Karcher

The Idaho Transportation Department is designing improvements to Interstate 84 between the Karcher Interchange and Franklin Boulevard Interchange in Nampa. The improvements are expected to improve safety, address congestion and benefit the regional economy for many years.

Construction Update

Project map

Fall 2017 - Spring 2018
Project began and preliminary engineering
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December 2017
Community workshop #1
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Spring - Summer 2018
Continue working on design plans
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Summer 2018
Community open house #2
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Late Summer 2018
Begin shoulder widening on I-84 between Karcher and Franklin
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Late Fall 2018 - Summer 2019
Begin construction on Karcher Overpass
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Spring 2019
Finalize design plans
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Spring - early Summer 2019
Begin construction on I-84 between Northside and Franklin
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Late Summer 2019
Begin construction on I-84 between Karcher and Northside
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Late 2020
Construction anticipated to be complete
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Downloads & resources

Fact SheetsAsset 4
June 2018 Open House Display BoardsAsset 4
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Fall 2018

Project Kick-off

ITD began design plans for I-84 widening.

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December 2017

Community Workshop #1

ITD held the first community workshop to present design plans and gather comments.

Workshop #1 Summary Workshop #1 PowerPoint
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Spring 2018

Karcher Road Overpass Final Design Plans

ITD completed the design plans to replace the Karcher Road Overpass in Nampa.

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June 2018

Community Open House #2

ITD held a second round of community open houses on June 26, 27 and 28 to present project plans and discuss construction sequencing for your review and comment.

Open House Displays Open House Maps
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September 26

Shoulder Widening

ITD begins a shoulder reconstruction and widening project between Karcher Road and Franklin Boulevard in Nampa.

News story
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October 10

Northside Blvd Lane Restrictions

Traffic on Northside Blvd to be reduced to one lane in either direction between the I-84 ramps as crews move equipment and trucks at the Northside Interchange. Lane restrictions expected through the end of next week.


What is happening now?

ITD continues to rebuild the shoulders along I-84 between the Franklin Boulevard and Karcher interchanges.

What is next?

Starting Oct. 10, traffic on Northside Boulevard will be reduced to one lane in each direction between the I-84 ramps during overnight hours (10 p.m. to 5 a.m.) Lane restrictions are expected to last through next week as crews will be moving equipment and trucks at the Northside Interchange.

Please drive carefully.

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