Enter the distance between the extreme of any group of 2 or more consecutive axles (in) and the number of axles in the group into the Bridge Weight Calculator. The calculator will evaluate the Bridge Weight. 

Bridge Weight Formula

The following two example problems outline the steps and information needed to calculate the Bridge Weight.

BW = 500* (L*N/(N-1) + 12*N + 36)

Variables:

  • BW is the Bridge Weight (lbs)
  • L is the distance between the extreme of any group of 2 or more consecutive axles (in) 
  • N is the number of axles in the group 

How to Calculate Bridge Weight?

The following steps outline how to calculate the Bridge Weight.

  1. First, determine the distance between the extreme of any group of 2 or more consecutive axles (in). 
  2. Next, determine the number of axles in the group. 
  3. Next, gather the formula from above = BW = 500* (L*N/(N-1) + 12*N + 36).
  4. Finally, calculate the Bridge Weight.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

distance between the extreme of any group of 2 or more consecutive axles (in) = 50

number of axles in the group = 4

BW = 500* (L*N/(N-1) + 12*N + 36) = ?