▁now ▁has ▁six , ▁as ▁photos ▁taken ▁soon ▁after ▁the ▁opening ▁clearly ▁show . ▁In ▁ 1 9 5 8 ▁tram ▁services ▁across ▁the ▁bridge ▁were ▁with dra wn ▁and ▁the ▁tracks ▁replaced ▁by ▁two ▁extra ▁road ▁lan es ; ▁these ▁lan es ▁are ▁now ▁the ▁left most ▁south bound ▁lan es ▁on ▁the ▁bridge ▁and ▁are ▁still ▁clearly ▁distinguish able ▁from ▁the ▁other ▁six ▁road ▁lan es . ▁L anes ▁ 7 ▁and ▁ 8 ▁now ▁connect ▁the ▁bridge ▁to ▁the ▁elev ated ▁C ah ill ▁Express way ▁that ▁car ries ▁traffic ▁to ▁the ▁Eastern ▁Dist rib utor . ▁ ▁In ▁ 1 9 8 8 , ▁work ▁began ▁to ▁build ▁a ▁tunnel ▁to ▁complement ▁the ▁bridge . ▁It ▁was ▁determined ▁that ▁the ▁bridge ▁could ▁no ▁longer ▁support ▁the ▁increased ▁traffic ▁flow ▁of ▁the ▁ 1 9 8 0 s . ▁The ▁Sydney ▁Har bour ▁T unnel ▁was ▁completed ▁in ▁August ▁ 1 9 9 2 ▁and ▁car ries ▁only ▁motor ▁vehicles . ▁ ▁The ▁Brad field ▁Highway ▁is ▁designated ▁as ▁a ▁Tra v elling ▁Stock ▁Route ▁which ▁means ▁that ▁it ▁is ▁perm iss ible ▁to ▁her d ▁liv est ock ▁across ▁the ▁bridge , ▁but ▁only ▁between ▁mid night ▁and ▁dawn , ▁and ▁after ▁giving ▁notice ▁of ▁intention ▁to ▁do ▁so . ▁In ▁practice , ▁ow ing ▁to ▁the ▁high - dens ity ▁urban ▁nature ▁of ▁modern ▁Sydney , ▁and ▁the ▁re location ▁of ▁ab atto irs ▁and ▁mark ets , ▁this ▁has ▁not ▁taken ▁place ▁for ▁approximately ▁half ▁a ▁century