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Calcimator

Railroad Bridge Load Rating Calculator

Calculate Cooper E load rating for railroad bridges from member capacity, dead load, and live load effects per AREMA Chapter 15.

Inputs

ft
kips
kips
kips

Results

Cooper E rating

80.1

Rating factor (RF)1
Impact factor33.3%
Available capacity400 kips
Adequate for E801
Adequate for 286k cars1
Normal rating80.1 E
Operating rating104.1 E
Impact multiplier1.33
Fatigue concern level2
Max Gross Weight Tons160.1
Dl Ratio0.25%
How to Use This Calculator
  1. Enter Span length, Member capacity, and Dead load effect.
  2. Set Live load (E80) and Member type.
  3. Review the Cooper E rating result.
  4. Use Rating factor (RF) and Impact factor (%) to inform your decision.
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