Montana - Area of significance: Transportation
| Adam's, J. C., Stone Barn |
| Airway Radio Station |
| Alice Creek Historic District |
| Anaconda Commercial Historic District |
| Anderson, Herman and Hannah, House |
| Antelope Stage Station |
| Babb-Piegan, Montana, Inspection Station |
| Bad Pass Trail |
| Bad Route Creek Bridge |
| Baldwin Building |
| Beavertown Historic District |
| Belton Chalets |
| Big Horn River Bridge |
| Billings Historic District |
| Billings Old Town Historic District |
| Black Otter Trail |
| Bluewater Creek Bridge |
| Bowman Lake Road |
| Boyd's Shop |
| Branscombe Automobile Machine Shop |
| Browne's Bridge |
| B Street District |
| Burgess Garage |
| Butte, Anaconda and Pacific Railway Historic District |
| Canyon Resort Airways Beacon |
| Carbella Bridge |
| Carter Bridge |
| Chicago, Milwaukee and St. Paul Passenger Depot |
| Chief Mountain Border Station and Quarters |
| Citadel Rock |
| Commercial District |
| Commercial District |
| Conley Street Bridge |
| Continental Oil Company Filling Station |
| Continental Oil Company Warehouse and Garage |
| Convict Grade Historic District |
| Cottonwood Creek Bridge |
| Cut Bank Municipal Airport and Army Air Force Base |
| Dearborn River High Bridge |
| Deer Lodge Central Business Historic District |
| DESMET (boat) |
| East Glacier Ranger Station Historic District |
| East Side Residential District |
| Fitzpatrick Ranch Historic District |
| Flathead River Bridge |
| Forsyth Bridge |
| Fort Benton |
| Fort Shaw Historic District and Cemetery |
| Froggie's Stopping Place on the Whoop-Up Trail |
| Gallatin Gateway Inn |
| Gamble-Robinson Company Warehouse |
| Gardiner Bridge |
| Geraldine Milwaukee Depot |
| Going-to-the-Sun Road |
| Grand Union Hotel |
| Great Falls Railroad Historic District |
| Great Falls West Bank Historic District |
| Great Northern Railway Depot |
| Great Northern Railway Passenger and Freight Depot and Division Office |
| Gunsight Pass Shelter |
| Harding Way Historic District |
| Hardy Bridge |
| Helena Railroad Depot Historic District |
| Homestake Airway Beacon |
| Huntley Bridge |
| Hutchins Bridge |
| Izaak Walton Inn |
| Jefferson Canyon Highway Historic District |
| Judith Landing Historic District |
| Kearney Rapids Bridge |
| Kevin Depot |
| Laurel Downtown Historic District |
| Lewis and Clark Bridge |
| Lewistown Central Business Historic District |
| Little Blackfoot River Bridge |
| LITTLE CHIEF (boat) |
| Locate Creek Bridge |
| Lonetree |
| MacDonald Pass Airway Beacon |
| Maclay Bridge |
| Marias River Bridge |
| Merrill Avenue Historic District |
| Milwaukee Depot |
| Milwaukee Road Historic District |
| Milwaukee Road Railroad Substation No. 10 |
| Missoula Downtown Historic District |
| Missouri River Bridge |
| Monarch Depot Historic District |
| Montana Aeronautics Commission Operations Historic District |
| Montana, Wyoming and Southern Railroad Depot |
| Morel Bridge |
| Morelli Bridge |
| MORNING EAGLE (carvel-planked wooden vessel) |
| Mossman Overpass |
| Mullan Road |
| Natural Pier Bridge |
| North Entrance Road Historic District |
| Northern Pacific Railroad Completion Site, 1883 |
| Northern Pacific Railroad Depot |
| Northern Pacific Railroad Settling Tanks |
Data from United States Park Service and Wikidata
