Bridge Deck Live Load Distribution Factor Calculator

Calculate live load distribution factors (g) for interior and exterior girders per AASHTO LRFD. Account for girder spacing, span length, and deck thickness for moment and shear.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How to Use

Enter the values for the scenario you are assessing. Calculate live load distribution factors (g) for interior and exterior girders per AASHTO LRFD. Account for girder spacing, span length, and deck thickness for moment and shear. Use the live load distribution result to inform your calculation.

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Frequently Asked Questions