Washington State Axle Weight Calculator
| Axle Configuration | Estimated Maximum Weight (lbs) | Remarks |
|---|---|---|
| Single Axle | 20,000 | Common for vehicles with one axle |
| Tandem Axle | 34,000 | Common for vehicles with two axles close together |
| Tridem Axle | 42,500 | Common for vehicles with three axles close together |
| Quad Axle | 50,000 | Common for vehicles with four axles close together |
| Steer Axle | 12,000 – 20,000 | Depends on tire width and manufacturer’s rating |
| Drive Axle (single) | 20,000 | Common for powered axles |
| Drive Axle (tandem) | 34,000 | Combined weight limit for two powered axles |