The Structural Components of Low-Level Bridges of Industrial Manufacture

In recent years, the engineer troops have shortened significantly the
time needed for replacing floating bridges with low-level bridges by
mechanizing the process of constructing them from components prepared
beforehand. The great majority of units of engineer troops construct
low-level bridges at the rate of 20 linear meters an hour while working
from one bank, and from 30 to 35 linear meters while working from two
banks