Amar mone hoche oi 4th line ta connect korbe Bankura-Masagram line tar sathe.... r Masagram theke Howrah jaor crossing stn outer a already present ache....oi crossing theke MASAGRAM-HWH local towards Howrah crossing kore 3rd loop theke 1st or 2nd line a giye..so no problem... baas Bankura line ta k 4th line er sathe connect korle hobe...bacause 4th to 3rd crossing o banabe ER and 3rd to 2nd and 1st line er crossing already present ache MSAE outer a.