Montana Oversize Permit, Wide and Heavy Haul Information

Montana | MT

https://www.mdt.mt.gov/business/mcs/permits.shtml

Feet

Inches

Legal Maximums
Length	636" 53' 0"
Overhang
- Total	84" 7' 0"
- Front	36" 3' 0"
- Back	48" 4' 0"
Width	102" 8' 6"
Height	168" 14' 0"
Weight	80,000 lbs.

Permit Maximums
Length	1800" 150' 0"
Width	216" 18' 0"
Height	204" 17' 0"
Weight	N/A

Pilot Car Needed
Length	1440" 120' 0"
Overhang
- Total	N/A N/A
- Front	N/A N/A
- Back	N/A N/A
Width	198" 16' 6"
Height	204" 17' 0"
Weight	N/A

Operating Hours, Restricted Travel, and Holiday Restrictions

24/7 travel is permitted to loads below 10 feet wide, 14 feet and 6 inches high, and 110 feet long. Daylight travel is allowed for loads smaller than 18 feet wide, 18 feet tall, or 120 feet long. Daylight travel times and restrictions also apply to Saturdays and Sundays.

For Red Route Highways, travel is prohibited after 3 pm. In addition, no transit is permitted on Fridays after 4 pm until Monday morning if a load surpasses 18 feet wide, 18 feet high, or 120 feet long. Loads that fall below 10 feet wide, 14 feet and 6 inches tall, or 110 feet long are typically allowed to travel during the Holidays.

Obtaining a permit

For single-use permits in Montana, validity stands for three days. These permit authorizations should be in the vehicle at all times during travel and can be obtained from a state’s local Permit Office.

Permits can be ordered at the Montana state website here: https://www.mdt.mt.gov/business/mcs/permits.shtml or by calling 406-444-7262. Their office is open from 7:30 am - 5:00 pm, Monday through Friday (except holidays).

To see oversize permit information for another state, check out the table below.