I guess that Hubli Bijapur bypass lines diverts just after that Big ROB for which already space is left below ROB. It join to Bijapur line on new station which might be future Gadag North station where cabin control comes to control bypass line trains usually frieghts or some premium trains in future if that Gadag North station come in city limits.. And my words of New station and Name Gadag North are just my assumptions which might not be true still but I believe as per Tenders floated for new PF, PF shelter, Station Building at 2 km point on Hombal line so it makes me assume a new station gona come their and also which is necessary as they can't run 14 km three rail lines parallel which will be expensive and not perfect thing compared go getting new station some where near to Gadag to join by...
more... pass Hubli line to future Bijapur double line route.. I even saw Tender of one more ROB going to come on Gadag Bijapur + new bypass line after this Hombal gate small ROB. That ROB will be 36 meter longer means more than two rail lines pass below that ROB so by that I guess New station will be after that New ROB itself.. And SM krishna Nagar ( Aashray colony), Gadag Public School will be near to that New station building..