Always up to date live Interactive Maps can be found here: Highway Systems | Functional Class

The City Plats listed below are current as of 2023. They are constructed in ArcGIS Pro 2.9.5 Esri. Please contact Geospatial Information for any questions at 406-444-6404.

  • The copyrighted¬© planimetric general incorporated City Plat maps show public roads on a land grid of township, range and section lines. These maps do not imply roadway ownership or maintenance responsibility. Cultural features adjacent to roads are displayed by symbols. The maps also indicate managed areas by owner, lakes, reservoirs, streams, canals/ditches, and, railroads

  • You can interact with the maps by following the PDF Map instructions. The instructions include information on turning layers on and off, finding features in the map, identifying additional road attributes, finding your location on the map in longitude/latitude, and taking a snapshot.

  • County Maps and Urban Maps and Unincorporated Town Maps are also available.

The City System Routes maps listed below are current as of 2021. They have been constructed in ArcGIS Pro 2.6.1 Esri.

  • These maps are updated annually to show current On System Routes and the City Boundary. On System Routes are comprised of the Interstate NHS, Non-Interstate NHS, State Primary, and State Secondary routes.