▁mounted ▁between ▁the ▁resid ual ▁stub s ▁and ▁the ▁central ▁pill ar , ▁while ▁a ▁second ▁parallel ▁" tem por ary " ▁single ▁track ▁tr uss ▁bridge ▁took ▁advantage ▁of ▁the ▁other ▁concrete ▁pill ar ▁origin ated ▁by ▁the ▁German ▁army ▁in ▁the ▁ 1 9 4 0 s . ▁ ▁New ▁bridge ▁ 2 0 0 9 ▁ ▁The ▁existing ▁arrang ements ▁were ▁found ▁to ▁be ▁ins u fficient ▁for ▁safe ▁operation ▁of ▁the ▁High - speed ▁train ▁to ▁be ▁introduced ▁( after ▁much ▁delay ) ▁in ▁ 2 0 0 9 ▁to ▁connect ▁Lie ge ▁and ▁A achen , ▁and ▁in ▁order ▁to ▁prepare ▁for ▁the ▁new ▁high ▁speed ▁passenger ▁service ▁a ▁new ▁bridge ▁was ▁constructed ▁between ▁ 1 9 9 7 ▁and ▁ 1 9 9 9 . ▁The ▁bridge ▁is ▁not ▁dedicated ▁only ▁to ▁High - speed ▁trains , ▁being ▁shared ▁with ▁the ▁existing ▁Wes er th al ▁line , ▁and ▁subject ▁to ▁a ▁ 1 6 0 ▁km / h ▁( 1 0 0 ▁m ph ) ▁speed ▁limit . ▁Work ▁started ▁in ▁ 1 9 9 5 ▁with ▁an ▁upgrade ▁to ▁the ▁existing ▁west bound ▁single ▁track ▁brid ges ▁which ▁would ▁be ▁used ▁for ▁traffic ▁in ▁both ▁directions ▁during ▁the ▁main ▁construction ▁phase . ▁In ▁January / F ebru ary ▁ 1 9 9 8 ▁the ▁steel ▁structure ▁of ▁the ▁east ▁bound ▁line ▁was ▁lifted ▁out ▁of ▁position ▁using ▁c ran es ▁and ▁broken ▁up ▁on ▁site ▁before ▁being ▁taken ▁away ▁by ▁tr uck . ▁Also ▁in