9 weigh stations · 3 interstates · updated October 2026
Montana Weigh Stations
All 9 weigh stations in Montana on I-90, I-15 and I-94 – location, direction and exit for every Montana weigh station.
Opens the map at your location – it stays in your browser.
Montana has 9 weigh stations in our data, on I-90, I-15 and I-94. Each Montana weigh station has its own page with its location, the direction of travel and the nearest exit.
5 stations serve one direction only – check the list for the side of the highway before you plan your route.
Whether a weigh station is open changes by the hour. The sign before the exit ramp shows OPEN or CLOSED, and it always has the final word.
Montana Weigh Station Map
Open the Montana weigh station mapWeigh Stations in Montana by Interstate
West to east or south to north, with the exit and what we know about each station.
I-902
| Weigh station | Direction | Exit |
|---|---|---|
| I-90 Eastbound Weigh Station | Eastbound | Exit 16 |
| I-90 Westbound Weigh Station | Westbound | Exit 16 |
I-151
| Weigh station | Direction | Exit |
|---|---|---|
| I-15 Southbound Weigh Station near Butte | Southbound | Exit 122 |
I-941
| Weigh station | Direction | Exit |
|---|---|---|
| I-94 Westbound Weigh Station near Wibaux | Westbound | Exit 241 |
Other highways5
| Weigh station | Direction | Exit |
|---|---|---|
| US-191 Weigh Station near Four Corners | – | – |
| MT 200 Weigh Station | – | – |
| US-87 Northbound Weigh Station near Fort Benton | Northbound | – |
| US-93 Weigh Station near Eureka | – | – |
| Coutts Vehicle Inspection Station | – | – |
What Happens at a Montana Weigh Station
When a Montana weigh station is open, trucks above the state’s weight threshold leave the highway and roll across the scale at low speed. A signal or a loudspeaker tells you to return to the highway or to park for a closer look. Officers can check your weight per axle, your credentials and your hours-of-service records, and they may inspect the vehicle itself.
If you’re overweight, you may get a fine and have to shift or remove part of the load before you can continue. Weighing first on a certified truck scale at a truck stop avoids most surprises.
Bypass Systems and Weigh-in-Motion
Many states pre-screen trucks at highway speed with weigh-in-motion sensors and electronic bypass programs such as PrePass or Drivewyze. Whether a particular Montana station takes part varies, so follow your in-cab signal and the roadside signs: when they tell you to pull in, pull in.
Federal Weight Limits
| Gross vehicle weight | 80,000 lbs |
|---|---|
| Single axle | 20,000 lbs |
| Tandem axle | 34,000 lbs |
Interstate System, 23 CFR Part 658. States may allow more with permits.
Montana Weigh Station FAQ
How many weigh stations are in Montana?
We list 9 weigh stations in Montana, mostly on I-90, I-15 and I-94.
Who has to stop at a weigh station in Montana?
Commercial vehicles above the state’s weight threshold must pull in when a station is open, unless a bypass system clears them. Private cars don’t. The posted signs at each station apply.
Are Montana weigh stations open 24 hours?
Some are, many aren’t – hours depend on staffing. Watch for the OPEN/CLOSED sign before each station.
Do RVs and pickups have to stop at weigh stations in Montana?
Privately used RVs, pickups and cars generally don’t, but rules for trailers and commercial use differ by state. The posted signs at the station always apply.
What is the weight limit at Montana weigh stations?
On interstates the federal limits apply: 80,000 lbs gross, 20,000 lbs on a single axle and 34,000 lbs on a tandem axle, unless a permit allows more.