Sir.....in my childhood i have seen once........MBNR-DHNE gauge conversion was done in 2yrs(including stregthening of bridges)....that was due to P.V.Narasimha Rao fund allocation....Doubling can only happen quickly if funds are provided....But doubling will not be a priority of Seemandhra govt bcz Approx 230km of SC-KRNT lies in Telangana region.....