▁Port ▁Melbourne ), ▁constructed ▁by ▁the ▁Melbourne ▁and ▁Hob son ' s ▁Bay ▁Railway ▁Company ▁and ▁opened ▁in ▁September ▁ 1 8 5 4 . ▁Today , ▁Melbourne ' s ▁sub urban ▁railway ▁network ▁consists ▁of ▁ 1 6 ▁elect r ified ▁lines , ▁the ▁central ▁City ▁Loop ▁sub way , ▁and ▁ 2 1 8 ▁stations , ▁with ▁a ▁total ▁length ▁of ▁ 3 7 2   km ▁of ▁the ▁elect r ified ▁lines , ▁operated ▁by ▁Metro ▁Tra ins ▁Melbourne ▁under ▁franch ise ▁to ▁the ▁Government ▁of ▁Victoria . ▁ ▁In ▁Gi pp s land ▁the ▁Or b ost ▁line ▁was ▁constructed ▁as ▁an ▁extension ▁of ▁sub urban ▁lines ▁between ▁ 1 8 7 7 ▁and ▁ 1 8 8 8 ▁to ▁B air ns dale , ▁and ▁extended ▁east wards ▁to ▁Or b ost ▁in ▁ 1 9 1 6 . ▁The ▁line ▁between ▁D anden ong ▁and ▁Tr ar alg on ▁was ▁elect r ified ▁in ▁ 1 9 5 4 , ▁but ▁elect r ification ▁was ▁cut ▁back ▁progress ively ▁to ▁P aken ham ▁between ▁ 1 9 8 7 ▁and ▁ 2 0 0 1 . ▁V / Line ▁passenger ▁trains ▁now ▁run ▁as ▁far ▁as ▁B air ns dale . ▁ ▁The ▁South ▁Gi pp s land ▁line ▁was ▁opened ▁from ▁D anden ong ▁to ▁C ran bourne , ▁Le ong ath a ▁and ▁Port ▁Albert ▁between ▁ 1 8 8 8 ▁and ▁ 1 8 9 2 . ▁A ▁number ▁of ▁branch ▁lines ▁were ▁also