One more thing i need to clarify here is that Binkadkatti new double line is on left side and it stopped some distance after that LC gate where new ROB getting constructed and Beside that in right side it is Existing Hubli line and after that Bijapur line so if they want to merge to Existing Bijapur line they will be not stopping that line to the left side of existng UBL line it will be on right side. As per your guess if they want to merge like that means new line has to cross the existing UBL line so it will be not double line then as both UBL line get cross intersected. instead wat i guess the present UBL line will be just breaked and slightly curve it and join new stoped line and one more track the leftover track from binkadkatti side is joined to Bijapur...
more... line making it UBL line and extra two new lines they might take for Bijapur for which we can see Bridge widening construction on the right side but we can have idea once we come to know width of extension of bridge. If its width more to ocupy double line then sure they doing same arrangement what i said here else their might be delay in UBL line to join GDG yard which can be done later but they cant join that UBL new left over line to Existing BJP line crossing Existing UBL straight line inbetween