▁D ong gu an , ▁China ▁into ▁standard ▁deck ▁modules . ▁A ▁total ▁of ▁ 9 6 ▁modules , ▁each ▁ ▁long ▁and ▁about ▁ 4 8 0 ▁t onnes ▁in ▁weight , ▁were ▁prepared . ▁These ▁deck ▁modules ▁were ▁brought ▁to ▁the ▁site ▁by ▁spe cially ▁designed ▁b arg es ▁and ▁raised ▁into ▁the ▁deck ▁position ▁by ▁a ▁pair ▁of ▁str and ▁jack ▁g ant ries ▁that ▁could ▁man oe uv re ▁along ▁the ▁main ▁cable . ▁ ▁The ▁approach ▁span ▁on ▁the ▁T sing ▁Y i ▁side ▁is ▁similar ▁in ▁form ▁and ▁cross - section ▁to ▁the ▁susp ended ▁deck , ▁but ▁is ▁supported ▁on ▁pi ers ▁instead ▁by ▁c ables . ▁The ▁first ▁span ▁was ▁assemble d ▁on ▁the ▁ground ▁and ▁raised ▁into ▁position ▁using ▁str and ▁j acks . ▁Further ▁construction ▁then ▁proceeded ▁in ▁cant ile ver ▁in ▁smaller ▁sections , ▁using ▁der rick ▁c ran es ▁station ed ▁on ▁the ▁deck ▁level . ▁An ▁expansion ▁joint ▁which ▁allowed ▁for ▁a ▁maximum ▁thermal ▁movement ▁of ▁ ± ▁ ▁was ▁also ▁provided ▁and ▁located ▁inside ▁the ▁approach ▁span . ▁ ▁The ▁bridge ▁par ap ets ▁are ▁of ▁a ▁special ▁design ▁by ▁Hong ▁Kong ▁standards , ▁compr ising ▁high - t ension ▁steel ▁str ands ▁anch ored ▁on ▁metal ▁posts . ▁ ▁Sh ip ▁impact ▁protection ▁The ▁rock ▁se aw alls ▁around ▁the ▁base ▁of ▁each ▁bridge ▁tower ▁are ▁capable ▁of ▁hal ting ▁a ▁ 2 2 0 , 0 0 0 ▁t onne ▁ship ▁moving ▁at ▁eight ▁kn ots .