So why are we talking about the weight? Someone recommending
those Bendy/DDs to visit London Weight Management is
it? 
Anyway, road will sink when there's heavy force exerted? Should be damage bah~~ Like that our SLA minister got study Physics and D&T boh? The structure(or any structure) must be built 4x more than the force exerted to prevent any failure(which I believe this is applied on everything). Of cause things would be worn off as times passes~