▁sh ores ▁respectively , ▁with ▁two ▁tracks ▁running ▁along ▁the ▁western ▁side ▁of ▁the ▁bridge . ▁These ▁tracks ▁are ▁part ▁of ▁the ▁North ▁Sh ore ▁railway ▁line . ▁ ▁In ▁ 1 9 5 8 ▁tram ▁services ▁across ▁the ▁bridge ▁were ▁with dra wn ▁and ▁the ▁tracks ▁they ▁had ▁used ▁were ▁removed ▁and ▁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 . ▁The ▁original ▁r amp ▁that ▁took ▁the ▁tr ams ▁into ▁their ▁termin us ▁at ▁the ▁under ground ▁W yn yard ▁railway ▁station ▁is ▁still ▁visible ▁at ▁the ▁southern ▁end ▁of ▁the ▁main ▁walk way ▁under ▁lan es ▁ 7 ▁and ▁ 8 , ▁although ▁around ▁ 1 9 6 4 , ▁the ▁former ▁tram ▁t unn els ▁and ▁station ▁were ▁converted ▁for ▁use ▁as ▁a ▁car park ▁for ▁the ▁M enz ies ▁Hotel ▁and ▁as ▁public ▁par king . ▁One ▁of ▁the ▁t unn els ▁was ▁converted ▁for ▁use ▁as ▁a ▁storage ▁facility ▁after ▁reported ly ▁being ▁used ▁by ▁the ▁NS W ▁police ▁as ▁a ▁p istol ▁firing ▁range . ▁ ▁Main ten ance ▁ ▁The ▁Sydney ▁Har bour ▁Bridge ▁requires ▁constant ▁ins pe ctions ▁and ▁other ▁maintenance ▁work ▁to ▁keep ▁it ▁safe ▁for ▁the ▁public , ▁and ▁to ▁protect ▁from ▁cor ros ion . ▁Among ▁the ▁tr ades ▁employed ▁on ▁the ▁bridge ▁are ▁pain ters , ▁iron work ers , ▁bo il