Bridge Load Calculator

Calculate AASHTO HS and HL truck loads for bridge design.

Inputs

Standard Truck Loading:
HS20-44: 8,000 lb front axle, 32,000 lb rear axles (14 ft spacing)
HL-93: Combination of design truck, design tandem, and lane load
Position of the front axle (0 = at left support)
Typical: 1.33 (33% increase), or 1.0 for no impact

Results

Enter bridge parameters to calculate design loads.

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