Rather than divide, separate will be right word.
Because divide denotes cutting single thing (campus here) into two parts.
But here tracks pass between studying campus (boundary) and accomodation/hostel campus (boundary) which already are distant and have separate walls.
The overbridge started on 17th december as per news. When I visited in May for blogging ganga bridge status, I saw two thick walls on...
more... both side of level crossing (below ROB) to stop movement of vehicles, so I thought It would have also made in December.
Now you telling, in march it was open, so may be it has been made in Apr- May duration.