▁near ▁the ▁Indiana ▁Har bor ▁and ▁Sh ip ▁Canal , ▁killing ▁four teen ▁highway ▁workers ▁and ▁inj uring ▁eigh teen ▁more . ▁In ▁ 1 9 8 7 , ▁the ▁state ▁designated ▁the ▁route ▁between ▁US   1 2 ▁and ▁the ▁Indiana ▁T oll ▁Road ▁as ▁the ▁Highway ▁Const ruction ▁Work ers ▁Memorial ▁Highway . ▁ ▁On ▁December ▁ 2 8 , ▁ 2 0 0 9 , ▁the ▁Indiana ▁Department ▁of ▁Transport ation ▁( IND OT ) ▁closed ▁the ▁elev ated ▁bridge ▁portion ▁of ▁C line ▁Avenue ▁between ▁Cal um et ▁and ▁Michigan ▁a ven ues , ▁a ▁distance ▁of ▁nearly ▁. ▁Cor ros ion ▁had ▁sever ely ▁weak ened ▁most ▁elements ▁of ▁the ▁bridge , ▁including ▁the ▁bridge ▁pi ers , ▁concrete , ▁be ams ▁and ▁c ables . ▁The ▁bridge ▁has ▁been ▁torn ▁down ▁and ▁will ▁be ▁replaced ▁with ▁a ▁to ll ▁crossing . ▁Similar ▁cases ▁of ▁cor ros ion ▁have ▁been ▁identified ▁in ▁other ▁brid ges ▁across ▁the ▁country . ▁ ▁Route ▁description ▁ ▁The ▁fre ew ay ▁runs ▁east ▁from ▁exit ▁ 3 ▁of ▁the ▁Indiana ▁T oll ▁Road ▁past ▁the ▁Gary / Ch icago ▁International ▁Airport , ▁and ▁then ▁south , ▁also ▁having ▁an ▁inter change ▁with ▁T oll ▁Road ▁exit ▁ 1 0 . ▁This ▁portion ▁also ▁serves ▁several ▁of ▁the ▁steel ▁mill s ▁( many ▁now ▁owned ▁by ▁Ar cel or M itt al ) ▁and ▁cas inos ▁in ▁East ▁Chicago ▁and ▁Gary , ▁Indiana . ▁The ▁north – s outh ▁portion ▁between ▁approximately ▁US