▁with ▁new ▁overhead ▁g ant ries ▁to ▁service ▁all ▁south bound ▁traffic . ▁And ▁following ▁on ▁from ▁this ▁upgrade , ▁in ▁ 2 0 1 8 ▁all ▁southern ▁to ll ▁pla za ▁infrastr ucture ▁was ▁also ▁removed . ▁Only ▁the ▁C ah ill ▁Express way ▁to ll ▁pla za ▁infrastr ucture ▁remains . ▁The ▁to ll ▁was ▁originally ▁placed ▁on ▁travel ▁across ▁the ▁bridge , ▁in ▁both ▁directions , ▁to ▁rec oup ▁the ▁cost ▁of ▁its ▁construction . ▁This ▁was ▁paid ▁off ▁in ▁ 1 9 8 8 , ▁but ▁the ▁to ll ▁has ▁been ▁kept ▁( inde ed ▁increased ) ▁to ▁rec oup ▁the ▁costs ▁of ▁the ▁Sydney ▁Har bour ▁T unnel . ▁ ▁After ▁the ▁decision ▁to ▁build ▁the ▁Sydney ▁Har bour ▁T unnel ▁was ▁made ▁in ▁the ▁early ▁ 1 9 8 0 s , ▁the ▁to ll ▁was ▁increased ▁( from ▁ 2 0 ▁c ents ▁to ▁$ 1 , ▁then ▁to ▁$ 1 . 5 0 , ▁and ▁finally ▁to ▁$ 2 ▁by ▁the ▁time ▁the ▁tunnel ▁opened ) ▁to ▁pay ▁for ▁its ▁construction . ▁The ▁tunnel ▁also ▁had ▁an ▁initial ▁to ll ▁of ▁$ 2 ▁south bound . ▁After ▁the ▁increase ▁to ▁$ 1 , ▁the ▁concrete ▁bar rier ▁on ▁the ▁bridge ▁separ ating ▁the ▁Brad field ▁Highway ▁from ▁the ▁C ah ill ▁Express way ▁was ▁increased ▁in ▁height , ▁because ▁of ▁the ▁large ▁numbers ▁of ▁drivers ▁crossing ▁it ▁il leg ally ▁from ▁l ane ▁ 6 ▁to ▁ 7 , ▁to ▁avoid ▁the ▁to ll .