Connecticut Truck Weight Limits
Complete guide to commercial vehicle weight regulations in Connecticut, including axle limits, permit requirements, and seasonal restrictions.
Weight Limits
| Axle Type | Connecticut Limit | Federal Limit | Difference |
|---|---|---|---|
| Single Axle | 22,400 lbs | 20,000 lbs | +2,400 lbs |
| Tandem Axle | 36,000 lbs | 34,000 lbs | +2,000 lbs |
| Gross Vehicle Weight | 80,000 lbs | 80,000 lbs | 0 lbs |
| Steer Axle (min) | 12,000 lbs | 12,000 lbs | 0 lbs |
| Steer Axle (max) | 22,400 lbs | 20,000 lbs | +2,400 lbs |
Connecticut has source-verified table, spacing, route, permit, or vehicle-specific rules. The calculator applies verified base limits and implemented contexts, but exact special-case output still needs source-chart fixtures.
Showing interstate route, standard operation.
Bridge Formula
Connecticut uses the standard Federal Bridge Formula to calculate maximum weight on groups of consecutive axles.
- W = Maximum weight (lbs)
- L = Distance between outer axles (ft)
- N = Number of axles in the group
Permissible Gross Loads in Connecticut
| Permissible Gross Loads for Vehicles in Connecticut | ||||||||
|---|---|---|---|---|---|---|---|---|
| Based on FederalBridge 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 | 34,000 | — | — | — | — | — | — | — |
| 5 | 35,000 | — | — | — | — | — | — | — |
| 6 | 36,000 | — | — | — | — | — | — | — |
| 7 | 36,000 | — | — | — | — | — | — | — |
| 8 | 36,000 | 42,000 | — | — | — | — | — | — |
| 9 | 39,000 | 42,500 | — | — | — | — | — | — |
| 10 | 40,000 | 43,500 | — | — | — | — | — | — |
| 11 | 41,000 | 44,000 | — | — | — | — | — | — |
| 12 | 42,000 | 45,000 | 50,000 | — | — | — | — | — |
| 13 | 43,000 | 45,500 | 50,500 | — | — | — | — | — |
| 14 | 44,000 | 46,500 | 51,500 | — | — | — | — | 80,000 |
| 15 | 44,800 | 47,000 | 52,000 | — | — | — | — | 80,000 |
| 16 | 44,800 | 48,000 | 52,500 | 58,000 | — | — | — | 80,000 |
| 17 | 44,800 | 48,500 | 53,500 | 58,500 | — | — | — | 80,000 |
| 18 | 44,800 | 49,500 | 54,000 | 59,000 | — | — | — | 80,000 |
| 19 | 44,800 | 50,000 | 54,500 | 60,000 | — | — | — | 80,000 |
| 20 | 44,800 | 51,000 | 55,500 | 60,500 | 66,000 | — | — | 80,000 |
| 21 | 44,800 | 51,500 | 56,000 | 61,000 | 66,500 | — | — | 80,000 |
| 22 | 44,800 | 52,500 | 56,500 | 61,500 | 67,000 | — | — | 80,000 |
| 23 | 44,800 | 53,000 | 57,500 | 62,500 | 68,000 | — | — | 80,000 |
| 24 | 44,800 | 54,000 | 58,000 | 63,000 | 68,500 | 74,000 | — | 80,000 |
| 25 | 44,800 | 54,500 | 58,500 | 63,500 | 69,000 | 74,500 | 80,000 | 80,000 |
| 26 | 44,800 | 55,500 | 59,500 | 64,000 | 69,500 | 75,000 | 80,000 | 80,000 |
| 27 | 44,800 | 56,000 | 60,000 | 65,000 | 70,000 | 75,500 | 80,000 | 80,000 |
| 28 | 44,800 | 57,000 | 60,500 | 65,500 | 71,000 | 76,500 | 80,000 | 80,000 |
| 29 | 44,800 | 57,500 | 61,500 | 66,000 | 71,500 | 77,000 | 80,000 | 80,000 |
| 30 | 44,800 | 58,500 | 62,000 | 66,500 | 72,000 | 77,500 | 80,000 | 80,000 |
| 31 | 44,800 | 59,000 | 62,500 | 67,500 | 72,500 | 78,000 | 80,000 | 80,000 |
| 32 | 44,800 | 60,000 | 63,500 | 68,000 | 73,000 | 78,500 | 80,000 | 80,000 |
| 33 | 44,800 | 60,500 | 64,000 | 68,500 | 74,000 | 79,000 | 80,000 | 80,000 |
| 34 | 44,800 | 61,500 | 64,500 | 69,000 | 74,500 | 80,000 | 80,000 | 80,000 |
| 35 | 44,800 | 62,000 | 65,500 | 70,000 | 75,000 | 80,000 | 80,000 | 80,000 |
| 36 | 44,800 | 63,000 | 66,000 | 70,500 | 75,500 | 80,000 | 80,000 | 80,000 |
| 37 | 44,800 | 63,500 | 66,500 | 71,000 | 76,000 | 80,000 | 80,000 | 80,000 |
| 38 | 44,800 | 64,500 | 67,500 | 71,500 | 77,000 | 80,000 | 80,000 | 80,000 |
| 39 | 44,800 | 65,000 | 68,000 | 72,500 | 77,500 | 80,000 | 80,000 | 80,000 |
| 40 | 44,800 | 66,000 | 68,500 | 73,000 | 78,000 | 80,000 | 80,000 | 80,000 |
| 41 | 44,800 | 66,500 | 69,500 | 73,500 | 78,500 | 80,000 | 80,000 | 80,000 |
| 42 | 44,800 | 67,500 | 70,000 | 74,000 | 79,000 | 80,000 | 80,000 | 80,000 |
| 43 | 44,800 | 68,000 | 70,500 | 75,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 44 | 44,800 | 69,000 | 71,500 | 75,500 | 80,000 | 80,000 | 80,000 | 80,000 |
| 45 | 44,800 | 69,500 | 72,000 | 76,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 46 | 44,800 | 70,500 | 72,500 | 76,500 | 80,000 | 80,000 | 80,000 | 80,000 |
| 47 | 44,800 | 71,000 | 73,500 | 77,500 | 80,000 | 80,000 | 80,000 | 80,000 |
| 48 | 44,800 | 72,000 | 74,000 | 78,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 49 | 44,800 | 72,500 | 74,500 | 78,500 | 80,000 | 80,000 | 80,000 | 80,000 |
| 50 | 44,800 | 73,500 | 75,500 | 79,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 51 | 44,800 | 74,000 | 76,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 52 | 44,800 | 75,000 | 76,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 53 | 44,800 | 75,500 | 77,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 54 | 44,800 | 76,500 | 78,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 55 | 44,800 | 77,000 | 78,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 56 | 44,800 | 78,000 | 79,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 57 | 44,800 | 78,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 58 | 44,800 | 79,500 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 59 | 44,800 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| 60 | 44,800 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
Values reflect FHWA policy of rounding down when calculated weights fall exactly halfway between 500-pound increments.
Connecticut has source-verified table, spacing, route, permit, or vehicle-specific rules. The calculator applies verified base limits and implemented contexts, but exact special-case output still needs source-chart fixtures.
Always verify current regulations with Connecticut DOT before making shipping decisions.
Permit Information
Requirements & Costs
- Overweight threshold
- 80,000 lbs
- Single trip permit
- $85
- Annual permit
- $750
- Processing time
- 24 hours via CVO WebPortal
- Divisible loads
- Permitted
- Online application
- Available
Required Documents
- Insurance
- Registration
- Tax Clearance
Special Vehicle Provisions
grandfather Rights
Connecticut retains higher axle weight limits due to federal grandfather rights
Single Axle: 22,400 lbs
Tandem Axle: 36,000 lbs
axle Spacing
Different limits based on axle spacing
permit Types
Multiple permit types available through CVO WebPortal
Contact Information
Permit Office
Official Website
Connecticut DOT WebsiteImportant Notes
- STANDARD LEGAL LIMIT: 22,400 lbs single axle (federal grandfather rights)
- STANDARD LEGAL LIMIT: 36,000 lbs tandem axle (federal grandfather rights)
- Axle spacing rule: 18,000 lbs each if <6 feet apart, 22,400 lbs if ≥6 feet apart
- Federal Bridge Formula applies to federal highways only
- Permits processed through Connecticut CVO WebPortal (CTDMV)
Calculate Your Weight Compliance
Use our interactive calculator to check if your truck configuration is compliant with Connecticut regulations.
Open Weight CalculatorNeighboring States
Need Help With Connecticut Compliance?
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Get Expert ConsultationSource: Connecticut General Statutes Section 14-267a | Last Updated: 1/13/2025 | Effective: 1/1/2025
Always verify current regulations with official sources before making shipping decisions.