' ▁age , ▁component ▁fail ures ▁within ▁the ▁tub es ▁increased , ▁resulting ▁in ▁frequent ▁del ays . ▁One ▁report ▁in ▁ 2 0 1 9 ▁estimated ▁that ▁the ▁North ▁River ▁T ub es ▁and ▁the ▁Portal ▁Bridge , ▁two ▁components ▁the ▁Gate way ▁Program ▁see ks ▁to ▁replace , ▁contributed ▁to ▁ 2 , 0 0 0 ▁hours ▁of ▁del ays ▁between ▁ 2 0 1 4 ▁and ▁ 2 0 1 8 . ▁After ▁the ▁North ▁River ▁T unn els ▁were ▁flo oded , ▁the ▁Gate way ▁Program ▁was ▁prior it ized . ▁In ▁May ▁ 2 0 1 4 , ▁Board man ▁told ▁the ▁Regional ▁Plan ▁Association ▁that ▁there ▁was ▁less ▁than ▁ 2 0 ▁years ▁before ▁one ▁or ▁both ▁of ▁the ▁t unn els ▁would ▁have ▁to ▁be ▁shut ▁down . ▁ ▁If ▁and ▁when ▁the ▁new ▁Gate way ▁Program ▁t unn els ▁are ▁built , ▁the ▁two ▁North ▁River ▁T unn els ▁would ▁close ▁for ▁rep airs , ▁one ▁at ▁a ▁time , ▁with ▁the ▁existing ▁level ▁of ▁service ▁maintained . ▁The ▁North ▁River ▁T ub es ▁and ▁the ▁Gate way ▁Program ▁t unn els ▁would ▁both ▁be ▁able ▁to ▁carry ▁a ▁maximum ▁of ▁ 2 4 ▁trains ▁per ▁hour . ▁Once ▁the ▁new ▁North ▁River ▁t unn els ▁re open ▁in ▁ 2 0 3 0 , ▁capacity ▁on ▁the ▁line ▁would ▁be ▁double d . ▁The ▁Hudson ▁T unnel ▁Project ▁would ▁also ▁allow ▁for ▁res il iency ▁on ▁the ▁N ortheast ▁Cor rid or ▁to ▁be