January 31, 2025
Thank you to the attendees of the US 93: Missoula to Florence Corridor Study open house events in late January. If you missed the events, materials are linked here for you to review at your convenience.
The US Highway 93 (US 93) Missoula to Florence corridor is a high priority for the Montana Department of Transportation (MDT). The study team greatly appreciates the thoughtful comments, feedback, and questions received throughout our open houses.
All comments and concerns gathered through discussion, on maps, and written on comment cards will be considered for the study report.
MDT and Robert Peccia & Associates (RPA) will review the feedback received and post the draft corridor study report on the study webpage in the coming weeks. An email notification will be sent when the draft report has been posted for public review.
After considering public comments on the draft report, RPA will implement final changes, and the report will be submitted to MDT and posted to the study’s webpage. The study will serve as a long-term vision for corridor improvements. These improvements will be implemented in the future as funding is secured.
In the meantime, all are encouraged to reach out with feedback and questions by emailing
Prefer to ask a question or submit feedback via phone? Call 406-207-4484.
Project Overview
Thousands of travelers commute to and from the Bitterroot Valley and Missoula every day. Specifically, the corridor between Missoula and Florence has seen steadily increasing traffic through the years. These traffic volumes create a need for an improved and safer roadway.
With this in mind, Robert Peccia & Associates (RPA), in partnership with the Montana Department of Transportation, are studying the roadway between Missoula and Florence on US Hwy 93 south of Missoula.
The study will take place during 2022 - 2024. Crew members will be surveying traffic volumes, completing the crash analysis, and meeting with stakeholders along the corridor to gather insight on the current state of the roadway. In addition, environmental research and attention to emergency access and alternative modes of transportation will be considered.
This area was studied previously in 2008 to consider the expanded capacity of the roadway, multi-modal transit options, improved pedestrian crossings and more. At the time, it was determined that an extensive construction project would need to occur, limiting major roadway access and causing delays on this busy thoroughfare. Due to project costs and incurred traffic disruption, this 2008 study was tabled until future funding or additional resources could be secured.
Now, MDT and RPA are returning to continue this research to determine a solution that incorporates public feedback and benefits the area while eliminating extensive traffic interruptions.
Study results will identify long-term corridor solutions that may include an expansion of the roadway, turn lanes, and/or changes to intersections. Construction would not occur for many years due to the extensive design process and large construction cost.
Drivers and residents may notice crew members on the side of the roadway setting up minor equipment, taking photos, and observing the area as the study begins. No direct impacts to traffic will take place as the investigation is completed.
Stakeholder meetings will be requested, and public meetings will be scheduled throughout the duration of the study. Please check the project overview tab for a current update on the study status.
Questions? Call 406-207-4484.
To sign up for updates as the study progresses, please email
For more information, or if you have questions please call the project hotline during business hours at, 406-207-4484 or email
US Hwy 93: Missoula to Florence Corridor Study. Click the image to view the PDF.
UPN 9977000