Doubling of line between bhagalpur and lailak mamalka has taken speed almost soil filling has been done and left to tighten upwell,track will be laid around september -october we can expect this to start by may to june next year.Doubling of track between malda town and bhagalpur total 181 km,doubling is left in just two area Maharajganj to sahibganj 14 km,other is pirpaiti to bhagalpur 50 km.Most difficult phase is kahalgaon to lailak mamalka which has as much as 6-7 bridges it may take time,whole doubling is expected to finish aroung 2017 end.Bridges are also under construction,few of all 7.