No, but they are designed to take a lateral load from a vehicle impacting them. In the US currently that load is about 4.5 tons at any one point. In a bridge li

No, but they are designed to take a lateral load from a vehicle impacting them. In the US currently that load is about 4.5 tons at any one point. In a bridge like this where the parapet walls are an integral part of the structure, that would likely not be the limiting case and the walls would be even stronger than that. Some more evidence that they had considered these things would have been nice, but civil structures are quite a bit stronger than people here seem to be giving them credit for. For example, the vertical design load from people walking on a bridge like this is something like 100 lb/ft^2. Meaning the bridge is designed to hold one jacuzzi every 10 or 15 feet, depending on how wide it is.