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Ustick Road Overpass

ITD has replaced the Ustick Road Overpass and Notus Canal Bridge.

Replacing the overpass allowed for additional lanes to be built on I-84 and was part of ITD's improvements to the I-84 corridor in Caldwell. Construction on the overpass began in May 2021 and was complete by summer of 2023. El reemplazo del paso elevado permitió que se construyeran carriles adicionales en la I-84 y el paso elevado es parte de las mejoras de ITD al corredor I-84 en Caldwell. La construcción del paso elevado comenzó en mayo de 2021 y se completó en el verano de 2023.

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Last Email Project Update

Project Update - Overpass is open

ITD has completed the final cleanup activities and has worked with the city of Caldwell to coordinate the opening of the overpass. The city had several projects underway throughout the summer near Ustick Road and determined it was best to keep Ustick Road overpass closed. Work in the area to open the overpass was completed mid-August and is now open for the public to use.

 

Click here to learn more information about the city of Caldwell’s projects.

To sign up for update from the City of Caldwell, click here.

For more information:

Call (208) 377-9688

Email [email protected]

Visit www.cityofcaldwell.org/departments/engineering/projects

Improvements Completed

In addition to making room for additional lanes on I-84, the new Ustick Road Overpass will include:

  • Five lanes across the bridge, two lanes in each direction with a center turn lane. *
  • A new bridge over the Notus Canal.
  • Sidewalks and bicycle lanes on both sides of the bridge.

 

* ITD will build the Ustick Overpass wide enough to accommodate five lanes, but will not open the bridge up to five lanes until the City of Caldwell widens Ustick Road on either side of the bridge. Click here for detailed plans.

May 2021
Begin Ustick Overpass construction
Fall 2022
Ustick Overpass complete
Fall 2022
Notus Canal Bridge construction begins and a new detour in place
Summer 2023
Notus Canal Bridge complete
Summer 2023
Ustick Road Open
Frequently Asked Questions
You've got questions, we've got answers! Here are some of the most common questions we've received about this project.
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General
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General
Why isn’t ITD adding a new interchange to I-84 to Nampa and Caldwell?
Why isn’t ITD adding a new interchange to I-84 to Nampa and Caldwell?

ITD conducted a detailed traffic analysis of I-84 in 2018. ITD analyzed whether or not a new interchange would be needed along I-84 between Nampa and Caldwell. The analysis concluded widening I-84 and improving existing interchanges at Karcher/Midland (in Nampa) and Franklin Road (in Caldwell) will serve the needs of traffic beyond the design year 2045.

General
Why is ITD replacing the Ustick Road Overpass?
Why is ITD replacing the Ustick Road Overpass?

The overpass must be replaced to make room for current widening I-84 between Caldwell and Nampa.

General
What improvements are planned for the Ustick Road Overpass?
What improvements are planned for the Ustick Road Overpass?

Improvements include:

  • Five lanes across the bridge. (Two lanes in each direction with a center
    turn lane)
  • Sidewalks and bicycle lanes on both sides of the bridge.
  • Replacing the bridge over the Notus Canal.
Closures
How long will the overpass be closed?
How long will the overpass be closed?

The Ustick Road Overpass is expected to re-open in late Summer 2023.

Detours
What is the detour route for the Ustick detour?
What is the detour route for the Ustick detour?

Traffic will be detoured from Middleton Road to Nampa-Caldwell Boulevard. Click here for a detour map.

General
Why did the Idaho Transportation Department close the Ustick Road and Aviation Way intersection?
Why did the Idaho Transportation Department close the Ustick Road and Aviation Way intersection?

ITD closed the intersection of Ustick Road and Aviation Way to raise the elevation of the intersection to match the height of the new Ustick Road Overpass. The Ustick Road Overpass will be higher to increase the vertical clearance on I-84.

General
How will emergency responders access neighborhoods in the area with so many intersections closed?
How will emergency responders access neighborhoods in the area with so many intersections closed?

ITD has worked closely with emergency responders in the area to ensure they have adequate access routes in the event emergency services are needed.

General
How do I learn more about the project?
How do I learn more about the project?

To learn more:

  • Visit the project website at ITDPROJECTS.ORG/84CORRIDOR
  • Text 84Corridor to 1-866-483-8422
  • Call 208-334-8002
  • Email [email protected]

For business resources: ITDPROJECTS.ORG/I84Businessresources

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