I am sure that the engineers involved in the project know what they are doing, but the sight of those concrete cantilever beams makes me uneasy. Concrete is great under compression, but not so great under tension, and those beams have to be under a considerable amount of tension, especially at their bases, where they meet the vertical pillars and the load being transmitted along them tends to pull them away from the vertical pillars. (If you visualize the forces involved , they would "want" to snap the cantilever beams off at their bases) I would imagine that the cantilever beams at that critical junction are HEAVILY reinforced with rebar (or something stronger).