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MDT launches statewide functional-classification review; Gallatin Valley MPO invited to provide input

3685205 · May 14, 2025
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Summary

Montana Department of Transportation is updating the statewide functional classification system; Gallatin Valley MPO staff and local jurisdictions were invited to a kickoff and asked to prepare local input on classification, highway-system designation and design-standard implications.

The Montana Department of Transportation is leading a statewide review of the functional classification system and invited local input from the Gallatin Valley MPO and member jurisdictions, MPO manager Jeff Butts said during the MPO's May technical committee meeting.

The review matters because functional classifications influence eligibility for federal aid and set expectations for design, maintenance and multimodal treatments on roadways, Jeff Butts, manager for the Gallatin Valley MPO, told the Transportation Technical Advisory Committee. The state-maintained official map will be updated and submitted to the Federal Highway Administration for review and approval.

Functional classification divides streets by primary purpose — from local roads that prioritize direct access to arterials that prioritize regional mobility — and FHWA guidance links classification to traffic volumes and speeds. Butts and other…

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