▁intersection ▁with ▁Old   US   2 0 . ▁The ▁highway ▁has ▁an ▁intersection ▁at ▁B yp ass ▁Road , ▁Old   US   1 1 2 , ▁before ▁cur ving ▁due ▁east . ▁The ▁highway ▁turns ▁back ▁north ▁at ▁Cass opol is ▁Street ▁and ▁passes ▁through ▁commercial ▁properties . ▁The ▁road ▁has ▁an ▁inter change ▁with ▁the ▁Indiana ▁T oll ▁Road , ▁Inter state ▁ 8 0 ▁( I – 8 0 )/ I – 9 0 . ▁North ▁of ▁the ▁to ll ▁road ▁the ▁road way ▁narrow s ▁to ▁a ▁two - lane ▁highway ▁with ▁a ▁center ▁turn ▁l ane ▁and ▁passes ▁through ▁resident ial ▁properties . ▁The ▁route ▁leaves ▁El kh art ▁and ▁passes ▁by ▁the ▁Sim ont on ▁Lake . ▁The ▁highway ▁narrow s ▁to ▁a ▁two - lane ▁highway ▁and ▁passes ▁through ▁far ml and . ▁SR   1 9 ▁ends ▁at ▁the ▁Michigan ▁state ▁line ▁and ▁continues ▁into ▁Michigan ▁as ▁Old   M – 2 0 5 . ▁ ▁Only ▁one ▁segment ▁of ▁State ▁Road ▁ 1 9 ▁is ▁included ▁in ▁the ▁National ▁Highway ▁System ▁( N HS ), ▁this ▁is ▁the ▁segment ▁that ▁is ▁concurrent ▁with ▁U . S . ▁Route ▁ 3 5 ▁and ▁SR   2 2 . ▁ ▁The ▁N HS ▁is ▁a ▁network ▁of ▁high ways ▁that ▁are ▁identified ▁as ▁being ▁most ▁important ▁for ▁the ▁economy , ▁mob ility ▁and ▁defense ▁of ▁the ▁nation . ▁ ▁The ▁highway ▁is ▁maintained ▁by ▁the ▁Indiana ▁Department ▁of ▁Transport ation ▁( IND OT ) ▁like