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Montana Weigh Station & DOT Information

Montana state weigh station map

Total Weigh Stations & Truck Scales: 40

All vehicles except passenger cars and pickup trucks under 14,000 lbs are required to stop at open Montana Weigh Stations. Recreational vehicles are not required to stop unless they are in transit for delivery to a distributor or dealer. Any vehicle that weighs more than 10,000 lbs may be stopped for inspection and weighing at portable scale locations.

PrePass trucks that receive a green light in Montana must still enter an open weigh station if they are pulling an oversize/overweight (even permitted) load, an overwide load (greater than 9 feet wide), an overheight load (greater than 14’6”), or a fuel tanker (loaded or empty).

Don’t mess with Montana when it comes to logs. They are a watch dog state. Our worst DOT experience ever was at the Crow Agency scale. The DOT officer decided he was going to find something wrong- no matter what. When someone scrutinizes your paperwork with that kind of attitude, you can be sure he WILL find something wrong. For the 15-minute discrepancy between a receipt and the log, we had to pay somewhere around $100 on the spot.

Tri-axle trailers with single tires (a total of 6 tires rather than 12 for duals) are only allowed 33,000 lbs in Montana.

The Montana fuel tax rate is $0.286 per gallon of diesel. This rate includes $0.0075 per gallon for the state cleanup fund.

Over-Gross Weight Tolerance: Premium Content

Over-Axel Weight Tolerance: Premium Content

Overweight Fines and Consequences: Premium Content

Important Phone Numbers:
State Police: 406-444-3780
Motor Carrier Services Division HQ: 406-444-6130 or 406-444-7262
Motor Carrier Safety Assistance Program: 406-444-3300
Montana Motor Carrier Association: 406-442-6600
PrePass: 800-773-7277


Weigh Station Name Highway / Route Mile Truck Scale Location
Culbertson RT 2 – eb Culbertson
Culbertson RT 2 – wb Culbertson
Kalispell RT 2 – eb Kalispell
Kalispell RT 2 – wb Kalispell
Troy (Libby) RT 2 56 – nb sb Troy (in the northwest corner of the state)
Havre RT 2 87 – nb sb Havre
Lavina RT 12 3 – nb Lavina (north of Billings)
Lavina RT 12 3 – sb Lavina (north of Billings)
Harlowtown RT 12 191 – nb sb Harlowtown
Circle RT 13 200 – eb Circle (northwest of Glendive)
Circle RT 13 200 – wb Circle (northwest of Glendive)
Butte I 15 90 – eb Rocker (5 miles west of Butte)
Butte I 15 90 – wb Rocker (5 miles west of Butte)
Great Falls I 15 – nb Great Falls (airport interchange)
Helena I 15 – sb Helena
Lima I 15 – nb Lima
Coutts, Alberta Canada I 15 – nb Coutts, Alberta (1 mile north of Alberta border)
Coutts, Alberta Canada I 15 – sb Coutts, Alberta (1 mile north of Alberta border)
Clearwater RT 83 200 – nb sb Clearwater Junction
Bozeman RT 84 191 – nb Bozeman Hot Springs
Bozeman RT 84 191 – sb Bozeman Hot Springs
Armington Junction RT 87 89 – eb Armington
Grass Range RT 87 19 200 Grass Range (in Fergus County)
Billings Interstate (East Bound) I 90 – eb 438 1/2 mile marker Billings
Billings Interstate (West Bound) I 90 – wb 438 1/2 mile marker Billings (10 miles west of Billings)
Crow Agency I 90 – eb Crow Agency
Crow Agency I 90 – wb Crow Agency
Drummond I 90 – eb Drummond
Drummond I 90 – wb Drummond
Haugan I 90 – eb 15 Haugen (east of ID border)
Haugan I 90 – wb 15 Haugen (east of ID border)
Forsyth I 94 – eb Forsyth (between Billings and Miles City)
Forsyth I 94 – wb Forsyth (between Billings and Miles City)
Wibaux I 94 – eb Wibaux
Wibaux I 94 – wb Wibaux
Broadus RT 212 – nb sb Broadus
Shelby I 15 – sb 367 Shelby (north of Shelby)
Missoula I 90 – eb 92 French Town (west of Missoula)
Missoula I 90 – wb 92 French Town (west of Missoula)
Black Hawk RT 500
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