Montana State Permit Resource

Staying current with state permits is crucial for truckers to ensure legal compliance and avoid costly fines or delays. These permits help streamline operations, ensuring that truckers can transport goods smoothly across state lines without regulatory issues.

Oversize and Overweight Regulations

Vehicle Dimensions:

    • Width: 8’6″
    • Height: 14′
    • Semi-Trailer Length: 53′
    • Max Length (including overhangs): 75′
    • Overhang: 3′ front, 15′ rear

Weight Limits:

    • Single Axle: 20,000 lbs
    • Tandem Axle: 34,000 lbs
    • Tridem Axle: 42,000 lbs
    • Max Gross Weight: 80,000 lbs

Term Over-Dimensional Permit:

    • Up to 95′ long, 15′ wide, 15’6″ high: $75
    • 100′ long (interstate only): $125
    • 120′ long (non-divisible length): $125 (width and height not included)
    • Triples Permit: $200

Single Trip Over-Dimensional Permit:

    • Oversize Trip: $10
    • 100′ long (interstate) single trip: $10
    • Triples Permit: $20

Overweight Permits:

    • $3.50 per 5,000 lbs of excess axle weight

Montana Trip and Fuel Permits (IRP/IFTA):

    • Time Limit: Temporary trip permits are valid for 72 hours. Extensions are possible.
    • Vehicles for exhibitions or displays, such as circuses and carnivals, may get single-trip permits for the entire state schedule. The last date in Montana is noted as the expiration date on such permits.
    • Gross Weight Over 6,000 lbs: Vehicles or combinations exceeding this weight may require a temporary trip permit.

Winter Weight Permit:

    • Validity: From December 1 to March 7 on non-Interstate highways.
    • Allowance: 10% excess weight.
    • Costs: $50 for 30 days or $150 for the entire winter period.
    • Permits may be suspended due to early thawing and are not valid on posted bridges or roads.
    • Cannot be combined with other overweight permits.

Contact Us

Please note that DOT Compliance Group does not provide State Permit Registration. However, we offer a variety of essential compliance services to keep your business running smoothly, including Clearinghouse Registration, Unified Carrier Registration (UCR), Biennial Updates, and much more. If you have any questions about our services or need assistance, feel free to reach out to us at 972-232-2218. We’re here to help with all your compliance needs.