Montana Oversize Permits: Complete Guide for Haulers
Montana Oversize Permits: The Hauler’s Complete Guide
With expansive landscapes and key highway routes stretching from the Rocky Mountains to the Great Plains, Montana is a critical path for oversize and overweight freight. If your load exceeds standard limits, you’ll need a Montana oversize permit to operate legally. This guide covers everything you need to stay compliant, avoid fines, and keep moving confidently. For some moves, trip and fuel permits are required alongside your oversize authorization. Prefer a simpler way? OSOWPermits.com can handle the entire permit process for you — fast and accurately.
Legal Dimensions
- Width
- 8.5 feet
- Height
- 13.5 feet
- Length
- 75 feet
Weight Limits
- Gross
- 80,000 lbs
- Per Axle Notes
- Varies by axle configuration and bridge spacing
Example Scenario
Frequently Asked Questions
Does Montana allow night travel?
Generally no, unless special provisions are granted and proper lighting/escort rules are followed.
Are there special restrictions for bridges or rural roads?
Yes, MDT reviews all permit requests for structural limits and may reroute your trip accordingly.
Can I apply for an annual oversize permit?
Montana offers annual permits for certain load types and standard routes — check eligibility with MDT or OSOWPermits.com.