Washington State Axle Weight Calculator

Washington State Axle Weight Calculator

Axle ConfigurationEstimated Maximum Weight (lbs)Remarks
Single Axle20,000Common for vehicles with one axle
Tandem Axle34,000Common for vehicles with two axles close together
Tridem Axle42,500Common for vehicles with three axles close together
Quad Axle50,000Common for vehicles with four axles close together
Steer Axle12,000 – 20,000Depends on tire width and manufacturer’s rating
Drive Axle (single)20,000Common for powered axles
Drive Axle (tandem)34,000Combined weight limit for two powered axles

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