Montana: 5 Axle Semi Truck
Gross Weight Limits
| Ruleset |
Jurisdication |
Permit Required? |
Estimated Gross * |
| US Federal |
Designated Routes |
No |
80,000 lbs |
| MT Law - Short |
All NN Routes except US 87 from mile 79.3 to 82.5 |
Yes |
99,870 lbs |
| MT Law - Long |
All NN Routes except US 87 from mile 79.3 to 82.5 |
Yes |
99,870 lbs |
* This is an estimate as it does not include bridge and tire compliance.
Axle Weight Limits
Ruleset: US Federal
Jurisdication: Designated Routes
|
Axle Group
|
Tire Type
|
Axle Spread
|
Axle Weight Limit
|
|---|
| Steer Axle | Single | | 20,000 lbs |
| Tandem Drives | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 96 - 108 in | 38,000 lbs |
| Trailer Tandem | Duals | 108 - 120 in | 39,000 lbs |
| Trailer Tandem | Duals | 120 - 121 in | 40,000 lbs |
Ruleset: MT Law - Short
Jurisdication: All NN Routes except US 87 from mile 79.3 to 82.5
|
Axle Group
|
Tire Type
|
Axle Spread
|
Axle Weight Limit
|
|---|
| Steer Axle | Single | | 20,000 lbs |
| Tandem Drives | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 96 - 108 in | 38,000 lbs |
| Trailer Tandem | Duals | 108 - 120 in | 39,000 lbs |
| Trailer Tandem | Duals | 120 - 121 in | 40,000 lbs |
Ruleset: MT Law - Long
Jurisdication: All NN Routes except US 87 from mile 79.3 to 82.5
|
Axle Group
|
Tire Type
|
Axle Spread
|
Axle Weight Limit
|
|---|
| Steer Axle | Single | | 20,000 lbs |
| Tandem Drives | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 40 - 96 in | 34,000 lbs |
| Trailer Tandem | Duals | 96 - 108 in | 38,000 lbs |
| Trailer Tandem | Duals | 108 - 120 in | 39,000 lbs |
| Trailer Tandem | Duals | 120 - 121 in | 40,000 lbs |
Dimension Restrictions
| Designated Routes |
|---|
| Dimension Name | Min | Max |
| Overall Height | | 14' 0" |
| Overall Length | No Limit |
| Overall Width | | 8' 6" |
| Front Overhang | Overhang to 75' overall truck length |
| Rear Overhang | Overhang to 75' overall truck length |
| Semi-Trailer Length | | 53' 0" |
| Semi-Trailer Wheelbase | None Specified |
References
Disclaimer
These figures are interpreted from the legal codes freely available, please read our full disclaimer and inform us of any errors!
