Montana
Montana Truck Permits for trip, fuel, oversize & overweight
A truck not registered for Montana runs on a temporary trip permit: one trip, up to 72 hours, void once the truck leaves the state. Without an IFTA license it also needs a 72-hour temporary fuel permit, which ends at the state line the same way. Both are ordered through eTRIPS, and neither is sold to Montana-plated vehicles. Oversize and overweight permits come from MDT Motor Carrier Services, in eTRIPS as well. Tell us the truck, load and route, and we file every Montana permit the trip needs.
Start here
What are you running through Montana?
Pick what fits your truck and load. Each answer opens the Montana rules and what we need from you.
Not sure which one? Call the 24/7 permit desk
(312) 395-7322- Load over 8 ft 6 in wide, 14 ft high or 75 ft long
Oversize & overweight permits
Single-trip and term permits from MDT through eTRIPS, superloads in two classes, and a winter weight permit off the interstates. - Out-of-state plates, no IFTA license
Trip & fuel permits
A temporary trip permit and a temporary fuel permit, each up to 72 hours and void when the truck leaves Montana. - B-trains up to 137,500 lbs
Canadian-weight corridors
I-15 from Shelby to Sweet Grass, US-93 from the BC border near Eureka and MT-16 from the Saskatchewan border near Plentywood.
Source: MDT Motor Carrier Services — eTRIPS permit restrictions, Permitting FAQ and 2026 Trucker's Handbook; ARM 18.8; MCA 61-10.
Montana and South Dakota
How Montana permits differ from South Dakota's
Neighbors at the state line, with different answers on holidays and heavy combinations.
Holidays on and off the interstate
Montana keeps interstates open 24/7 on holidays for loads up to 18 ft wide but parks larger loads on other roads. South Dakota sets no weekend or holiday restrictions.
Heavier combinations near the border
Montana's Canadian-weight corridors take B-trains up to 137,500 lbs. South Dakota permits longer combination vehicles up to 129,000 lbs.
A four-day block or a rally week
Off the interstate, Montana's Thanksgiving block runs Thursday through Sunday. South Dakota's calendar problem is the Sturgis Rally window in August.
How it works
Your Montana permit in three steps
Send the load and route
Truck, trailer, dimensions, weight, origin and destination. Your fleet details are saved for next time.
We check and file
Our permit desk checks the Montana rules for your load and files with MDT Motor Carrier Services.
Get your permit
You get the permit PDF, a written route and an interactive route map to share with the driver.
What will an oversize permit in Montana cost?
Enter your pickup and delivery locations, choose your permit type, and compare estimated permit costs across route options.
- Oversize and overweight permits across the lower 48 and DC
- State-by-state fee breakdown for each route option
- Order your permit or talk to a specialist
FAQ
Montana permit questions
Is the Montana temporary trip permit good for a return run?
No. It covers one trip of up to 72 hours and is void once the truck leaves Montana, so coming back in takes a new permit.
Can a Montana-plated truck buy the 72-hour trip or fuel permit?
No. MDT does not sell either temporary permit to Montana-plated vehicles.
Which trucks use Montana's temporary fuel permit?
Trucks without an IFTA license. The permit runs 72 hours and ends when the truck leaves the state; we order it in eTRIPS together with the trip permit.
Is Montana part of a regional oversize permit?
No. Montana has no regional permit, so a load crossing the state carries its own MDT permit, ordered in eTRIPS like the trip and fuel permits.
Can you order my Montana permits in eTRIPS for me?
Yes. Send the truck, load and route once; our permit desk orders the trip, fuel and oversize permits in eTRIPS and covers the rest of the route around the clock.
Keep going
Montana permit pages
Permit types in Montana
All states
Neighboring states
24/7 permit desk
Need a permit in Montana for this load?
Send the details once. We file with MDT Motor Carrier Services, plus every other state on your route.