▁service ▁to ▁the ▁F ult on ▁Street ▁E lev ated ▁and ▁the ▁Broadway ▁E lev ated ▁( now ▁the ▁B MT ▁J ama ica ▁Line ), ▁at ▁a ▁point ▁known ▁as ▁Manh attan ▁J unction ▁( now ▁Broadway ▁J unction ). ▁ ▁Service ▁first ▁ran ▁on ▁July ▁ 2 8 , ▁ 1 9 0 6 ▁from ▁Can ars ie ▁Land ing ▁to ▁the ▁Broadway ▁Fer ry ▁at ▁the ▁foot ▁of ▁Broadway ▁in ▁Williams burg , ▁at ▁the ▁East ▁River . ▁This ▁route ▁still ▁exists ▁as ▁the ▁B MT ▁J ama ica ▁Line , ▁except ▁for ▁the ▁last ▁piece ▁to ▁the ▁East ▁River , ▁where ▁the ▁J ama ica ▁Line ▁runs ▁over ▁the ▁Williams burg ▁Bridge . ▁The ▁route ▁was ▁later ▁extended ▁over ▁the ▁bridge ▁and ▁along ▁the ▁B MT ▁N ass au ▁Street ▁Line ▁to ▁Canal ▁Street ▁and ▁then ▁Ch amb ers ▁Street . ▁ ▁D ual ▁Cont ract s ▁re building ▁ ▁The ▁D ual ▁Cont ract s ▁sub way ▁expansion ▁scheme ▁around ▁World ▁War ▁I ▁saw ▁the ▁re building ▁of ▁the ▁complex ▁train ▁j unction ▁at ▁Manh attan ▁J unction ▁into ▁an ▁even ▁more ▁complex ▁fly over ▁j unction ▁now ▁known ▁as ▁Broadway ▁J unction . ▁The ▁expansion ▁extended ▁south ▁to ▁the ▁point ▁at ▁which ▁the ▁Can ars ie ▁and ▁F ult on ▁Street ▁E lev ated s ▁diver ged , ▁including ▁a ▁six - track , ▁three - platform ▁station ▁at ▁Atlantic ▁Avenue . ▁The ▁complex ▁was ▁re built ▁under ▁traffic ▁and ▁opened ▁in ▁stages , ▁reaching ▁completion ▁in