Whose responsible?

Recently a girder fell from an under construction flyover on a taxi killing one person on main Sharah-e-Faisal. The flyover, which will connect PAF base situated on both sides of the road, is reportedly being constructed by Frontier Works Organisation (FWO), the same organization responsible for the debacle of Northern Bypass a couple of years ago.
This should be treated as a case of criminal negligence however, considering the past, the people responsible for this mistake will walk scot-free. Let’s face it, when a debacle as huge as the collapse of the Northern Bypass Bridge, days after inauguration can be brushed under the rug then the lost life of a taxi driver won’t be a cause of concern for the authorities.