What is "military load classification"

n. A standard http://en.wikipedia.org/wiki/North%20Atlantic%20Treaty%20Organization system in which a route, bridge, or raft is assigned class number(s) representing the load it can carry; vehicles are also assigned class number(s) indicating the maximum class of route, bridge, or raft they are authorized to used.

The Military Load Classification (MLC) is a system of standards used by NATO to classify the safe amount of load a surface can withstand. Load-carrying capacity is shown in whole numbers for vehicles, bridges, roads, and routes. Vehicles are classified by weight, type, and effect on routes. Bridges, roads, and routes are classified by physical characteristics, type and flow of traffic, effects of weather, and other special conditions.