Apparently, from what I can glean from the news reports, the fault is not on the bridge itself. since trucks and covered vans will pass on the second level (roof) of the bridge, the railway line running inside the bridge itself. There is no shortage of headroom for vehicles, it is wide open to the sky.
The problem seems to be on the approach road overpass where vehicular traffic crosses the bridge approach for rail, underneath it. This is my understanding.
Anyways, there are enough people involved in this to correct the mistake, if any and however major/minor.
No need to worry.