It really isn't, nothing past the vertical columns is load bearing and shouldn't have had vehicles parked on it (note: over it is fine, just not on it). This can easily be seen by comparing the collapsed section to the one above:
Look how the section is so much thinner than the inner ones where vehicles will be and how they have reinforcement underneath. That section was obviously designed as both a walkway for pedestrians exiting or returning to their vehicle and a rain shield, not an area to take the weight of a vehicle. If it never had kerb/bollard/barrier to prevent vehicles doing so that's a fail by the company that designed it, if it had them but they were removed to extend the parking space that's a fail by whoever decided that, but either was it's a fail and complete ineptitude by whoever made that decision.
