New Mexico Truck Weight Limits
Complete guide to commercial vehicle weight regulations in New Mexico, including axle limits, permit requirements, and seasonal restrictions.
Weight Limits
| Axle Type | New Mexico Limit | Federal Limit | Difference |
|---|---|---|---|
| Single Axle | 21,600 lbs | 20,000 lbs | +1,600 lbs |
| Tandem Axle | 34,320 lbs | 34,000 lbs | +320 lbs |
| Gross Vehicle Weight | 86,400 lbs | 80,000 lbs | +6,400 lbs |
| Steer Axle (min) | 12,000 lbs | 12,000 lbs | 0 lbs |
| Steer Axle (max) | 21,600 lbs | 20,000 lbs | +1,600 lbs |
Showing interstate route, standard operation.
Enforcement tolerance: 5% on gross weight.
Bridge Formula
New Mexico uses a custom weight formula: New Mexico statutory weight table.
Permissible Gross Loads in New Mexico
| Permissible Gross Loads for Vehicles in New Mexico | ||||||||
|---|---|---|---|---|---|---|---|---|
| Based on New Mexico statutory weight tableBridge Formula: W = 500 × [LN/(N-1) + 12N + 36] | ||||||||
| Showing interstate route, standard operation | ||||||||
Distance (ft) L | 2 AXLES | 3 AXLES | 4 AXLES | 5 AXLES | 6 AXLES | 7 AXLES | 8 AXLES | 9 AXLES |
| 4 | 34,320 | — | — | — | — | — | — | — |
| 5 | 35,100 | — | — | — | — | — | — | — |
| 6 | 35,880 | — | — | — | — | — | — | — |
| 7 | 36,660 | — | — | — | — | — | — | — |
| 8 | 37,440 | 37,440 | — | — | — | — | — | — |
| 9 | 38,220 | 38,220 | — | — | — | — | — | — |
| 10 | 39,000 | 39,000 | — | — | — | — | — | — |
| 11 | 39,780 | 39,780 | — | — | — | — | — | — |
| 12 | 40,560 | 40,560 | 40,560 | — | — | — | — | — |
| 13 | 41,340 | 41,340 | 41,340 | — | — | — | — | — |
| 14 | 42,120 | 42,120 | 42,120 | — | — | — | — | — |
| 15 | 42,900 | 42,900 | 42,900 | — | — | — | — | — |
| 16 | 43,680 | 43,680 | 43,680 | 43,680 | — | — | — | — |
| 17 | 44,460 | 44,460 | 44,460 | 44,460 | — | — | — | — |
| 18 | 45,240 | 45,240 | 45,240 | 45,240 | — | — | — | — |
| 19 | 53,100 | 53,100 | 53,100 | 53,100 | — | — | — | — |
| 20 | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | — | — | — |
| 21 | 54,900 | 54,900 | 54,900 | 54,900 | 54,900 | — | — | — |
| 22 | 55,800 | 55,800 | 55,800 | 55,800 | 55,800 | — | — | — |
| 23 | 56,700 | 56,700 | 56,700 | 56,700 | 56,700 | — | — | — |
| 24 | 57,600 | 57,600 | 57,600 | 57,600 | 57,600 | 57,600 | — | — |
| 25 | 58,500 | 58,500 | 58,500 | 58,500 | 58,500 | 58,500 | — | — |
| 26 | 59,400 | 59,400 | 59,400 | 59,400 | 59,400 | 59,400 | — | — |
| 27 | 60,300 | 60,300 | 60,300 | 60,300 | 60,300 | 60,300 | — | — |
| 28 | 61,200 | 61,200 | 61,200 | 61,200 | 61,200 | 61,200 | 61,200 | — |
| 29 | 62,100 | 62,100 | 62,100 | 62,100 | 62,100 | 62,100 | 62,100 | — |
| 30 | 63,000 | 63,000 | 63,000 | 63,000 | 63,000 | 63,000 | 63,000 | — |
| 31 | 63,900 | 63,900 | 63,900 | 63,900 | 63,900 | 63,900 | 63,900 | — |
| 32 | 64,800 | 64,800 | 64,800 | 64,800 | 64,800 | 64,800 | 64,800 | 64,800 |
| 33 | 65,700 | 65,700 | 65,700 | 65,700 | 65,700 | 65,700 | 65,700 | 65,700 |
| 34 | 66,600 | 66,600 | 66,600 | 66,600 | 66,600 | 66,600 | 66,600 | 66,600 |
| 35 | 67,500 | 67,500 | 67,500 | 67,500 | 67,500 | 67,500 | 67,500 | 67,500 |
| 36 | 68,400 | 68,400 | 68,400 | 68,400 | 68,400 | 68,400 | 68,400 | 68,400 |
| 37 | 69,300 | 69,300 | 69,300 | 69,300 | 69,300 | 69,300 | 69,300 | 69,300 |
| 38 | 70,200 | 70,200 | 70,200 | 70,200 | 70,200 | 70,200 | 70,200 | 70,200 |
| 39 | 71,100 | 71,100 | 71,100 | 71,100 | 71,100 | 71,100 | 71,100 | 71,100 |
| 40 | 72,000 | 72,000 | 72,000 | 72,000 | 72,000 | 72,000 | 72,000 | 72,000 |
| 41 | 72,900 | 72,900 | 72,900 | 72,900 | 72,900 | 72,900 | 72,900 | 72,900 |
| 42 | 73,800 | 73,800 | 73,800 | 73,800 | 73,800 | 73,800 | 73,800 | 73,800 |
| 43 | 74,700 | 74,700 | 74,700 | 74,700 | 74,700 | 74,700 | 74,700 | 74,700 |
| 44 | 75,600 | 75,600 | 75,600 | 75,600 | 75,600 | 75,600 | 75,600 | 75,600 |
| 45 | 76,500 | 76,500 | 76,500 | 76,500 | 76,500 | 76,500 | 76,500 | 76,500 |
| 46 | 77,400 | 77,400 | 77,400 | 77,400 | 77,400 | 77,400 | 77,400 | 77,400 |
| 47 | 78,300 | 78,300 | 78,300 | 78,300 | 78,300 | 78,300 | 78,300 | 78,300 |
| 48 | 79,200 | 79,200 | 79,200 | 79,200 | 79,200 | 79,200 | 79,200 | 79,200 |
| 49 | 80,100 | 80,100 | 80,100 | 80,100 | 80,100 | 80,100 | 80,100 | 80,100 |
| 50 | 81,000 | 81,000 | 81,000 | 81,000 | 81,000 | 81,000 | 81,000 | 81,000 |
| 51 | 81,900 | 81,900 | 81,900 | 81,900 | 81,900 | 81,900 | 81,900 | 81,900 |
| 52 | 82,800 | 82,800 | 82,800 | 82,800 | 82,800 | 82,800 | 82,800 | 82,800 |
| 53 | 83,700 | 83,700 | 83,700 | 83,700 | 83,700 | 83,700 | 83,700 | 83,700 |
| 54 | 84,600 | 84,600 | 84,600 | 84,600 | 84,600 | 84,600 | 84,600 | 84,600 |
| 55 | 85,500 | 85,500 | 85,500 | 85,500 | 85,500 | 85,500 | 85,500 | 85,500 |
| 56 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 |
| 57 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 |
| 58 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 | 86,400 |
Values reflect FHWA policy of rounding down when calculated weights fall exactly halfway between 500-pound increments.
New Mexico GVW limit of 86,400 lbs differs from the federal interstate limit of 80,000 lbs.
New Mexico allows a 5% enforcement tolerance on gross weight.
Always verify current regulations with New Mexico DOT before making shipping decisions.
Permit Information
Requirements & Costs
- Overweight threshold
- 86,400 lbs
- Single trip permit
- $65
- Annual permit
- $650
- Max permit weight
- 140,000 lbs
- Processing time
- 24 hours
- Divisible loads
- Permitted
- Online application
- Available
Required Documents
- Insurance
- Registration
Special Vehicle Provisions
permit Weights
Government permits allow up to 140,000 lbs with pilot car requirements. Border provision: Vehicles up to 96,000 lbs operating within 6 miles of Mexico border (non-divisible loads not required to be proven)
Contact Information
Permit Office
Hours: Mon-Fri 8:00 AM - 5:00 PM MST
Official Website
New Mexico DOT WebsiteImportant Notes
- Maximum legal weight: 86,400 lbs without permits
- Border provision: 96,000 lbs within 6 miles of Mexico border
- Government permits: up to 140,000 lbs with pilot car requirements
- Weight-distance tax applies to vehicles over 26,000 lbs DGVW
- Overweight permits available for interstate and 4-lane highways
Calculate Your Weight Compliance
Use our interactive calculator to check if your truck configuration is compliant with New Mexico regulations.
Open Weight CalculatorNeighboring States
Need Help With New Mexico Compliance?
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Get Expert ConsultationSource: New Mexico Statutes Chapter 66, NMDOT Permit Regulations | Last Updated: 1/13/2025 | Effective: 1/1/2025
Always verify current regulations with official sources before making shipping decisions.