I m not demying that it is main line but i meant to say that it will provide another route from bsb to ndls/ddn/jammu via lko. Already the mgs ald cnb ndls route is saturated and bsb sln lko is now double electrified so making lko pbh bsb into double electrified would be better. In the pink book of ir for 2015-16 this mainline is mentioned under electrification but till march 2016 i have not seen any progress.