Concrete Arch Bridge 1

[TamerOsman]

I would like to know how to model the soil over an arch bridge and apply an axle load over the bridge

 

[19652022]

Just deal the soil like other dead loads and if the soil thickness is sufficiently high take the axle loads as uniformly distributed load over an area which the footprint of the wheel will be if it is assumed to be distributed at 45 deg. angle.