Ir should build y-leg for sbg loop towards jhajha inorder to skip loco reversal for trains coming from bgp/jmp towards hwh/south india/ranchi.atleast it will save around 30 minutes.they are constructing similar y-leg regarding upcoming Munger rail cum road bridge on both ends of ganga bridge.in future a lot of trains is going to run on this section once mega munger ganga bridge is completed.