The Idaho Transportation Department is planning for the future replacement of the Morning Mill bridge over Interstate 90 near Mullan.

I-90 Morning Mill Interchange

The Idaho Transportation Department is planning for the future replacement of the Morning Mill bridge over Interstate 90 near Mullan.


ITIP Public Comment Period Open: July 1-31, 2026

This project was previously programed for construction in 2030. Due to recent changes in transportation funding and the need to prioritize projects essential to maintaining the existing transportation system, the project remains in the seven-year plan but is now proposed for construction in 2032.

Public comments will be accepted July 1-31 on this project and others in the seven-year plan as part of an annual comment period.

Overview

The Idaho Transportation Department plans to replace the Morning Mill bridge over I-90 in Mullan in future years.

Earlier planning work looked at whether changes to nearby interstate access points might improve safety and traffic flow. After reviewing options and hearing from the community, ITD has decided to keep the current interchange layout as it is and focus only on replacing the existing Morning Mill bridge.

There are no plans to close or remove access to Interstate 90 at the Morning Mill, River Street, or Atlas Road interchanges.

Project Overview

Morning Mill Road overpass over I-90.


The Morning Mill bridge over I-90 is reaching the end of its planned service life. Like all structures, it was designed to serve for a specific period of time, which is why ITD has begun planning for its long-term replacement.

As part of early planning in 2025, ITD studied how the Morning Mill Road, River Street, and Atlas Road interchanges work together. This included analysis with a team of transportation industry professionals and engineers to evaluate different options, such as changing or removing access points, to better understand long-term safety and traffic needs and plan for future growth.

During this process, ITD met with local leaders, emergency responders, and community members in February 2026. The feedback was clear: people value the existing access and did not want to see major changes.

Based on that input, along with technical review, ITD will move forward with only replacing the existing Morning Mill bridge in its current location, with no changes planned for  nearby interchanges or access points.

Map graphic highlighting the access points at 3 local interchanges near Mullan.

Funding and Timing

This project was previously programed for construction in 2030. Due to recent changes in transportation funding and the need to prioritize projects essential to maintaining the existing transportation system, the project remains in the seven-year plan but is now proposed for construction in 2032.

Public comments will be accepted July 1-31 on this project and others in the seven-year plan as part of an annual comment period.

In the meantime, the bridge will remain safe for travel. ITD will continue regular inspections and maintenance to ensure the structure remains in good condition to serve the community while planning for its eventual replacement.

Public Involvement

A public meeting is being planned for later in 2026 to provide an opportunity for the community to learn more, ask questions, and share input while this project is still in the design and development phase.


Contact the Project Team

To contact the project team with questions email zachary.feist@itd.idaho.gov or call (208) 772-1200.