The loads on connecting bolts are much higher here than in WTC buildings - a 30m + span of freeway connected to too pillars at one end as opposed to floor sections connected to outer walls and central columns all around outer + inner perimeter. Any distortion is therefore magnified by the enormous weight of the road section - basically this thing sagged a bit and slipped off its supports (which are left standing - bet they'll just stick a new bit of road onto them). Lighter weight floor sections with evenly distributed bracing are far less liable to this kind of collapse.

More importantly, though, where's the pancake effect? This thing just flopped down onto the freeway below - which remained standing so that the fire dept. could walk along it with hoses etc. But the drop was much more than that between floors of WTC, and the mass of the collapsed span enormously greater than a falling bit of floor.
So I honestly don't think this validates any official explanation for Trade Center collapses