Aircraft bridge

In 1963, a taxiway bridge at O'Hare International Airport, one of the busiest airports in the world, was planned to handle future aircraft weighing 365,000 pounds (166,000 kg), but aircraft weights doubled within two years of its construction.

[1] Currently, the largest passenger aircraft in the world, the Airbus A380, has a maximum take-off weight (MTOW) of 575 t (1,268,000 lb).

[2] Braking force of 70 percent of the live load is assumed in two recent taxiway bridge designs.

[2][3] And "deck design is more apt to be controlled by punching shear than flexure due to the heavy wheel loads.

A taxiway bridge must be designed to carry the weight of the maximum size airplanes crossing and perhaps stopping directly upon it.