N H DP ). ▁The ▁N H DP ▁is ▁under ▁implementation ▁in ▁Ph ases . ▁ ▁Ph ase ▁I : ▁Appro ved ▁in ▁December ▁ 2 0 0 0 , ▁at ▁an ▁estimated ▁cost ▁of ▁IN R ▁ 3 0 0 ▁Bill ion , ▁it ▁included ▁the ▁Golden ▁Qu ad ril ater al ▁( G Q ), ▁port ions ▁of ▁the ▁NS - E W ▁Cor rid ors , ▁and ▁connect ivity ▁of ▁major ▁ports ▁to ▁National ▁High ways . ▁ ▁Ph ase ▁II : ▁Appro ved ▁in ▁December ▁ 2 0 0 3 , ▁at ▁an ▁estimated ▁cost ▁of ▁IN R ▁ 3 4 3 ▁Bill ion , ▁it ▁included ▁the ▁completion ▁of ▁the ▁NS - E W ▁cor rid ors ▁and ▁another ▁ ▁of ▁high ways . ▁ ▁Ph ase ▁III A : ▁This ▁phase ▁was ▁approved ▁in ▁March ▁ 2 0 0 5 , ▁at ▁an ▁estimated ▁cost ▁of ▁IN R ▁ 2 2 2 ▁Bill ion , ▁it ▁includes ▁an ▁upgrade ▁to ▁ 4 - lan es ▁of ▁of ▁National ▁High ways . ▁ ▁Ph ase ▁III B : ▁This ▁was ▁approved ▁in ▁April ▁ 2 0 0 6 , ▁at ▁an ▁estimated ▁cost ▁of ▁IN R ▁ 5 4 3 ▁Bill ion , ▁it ▁includes ▁an ▁upgrade ▁to ▁ 4 - lan es ▁of ▁ ▁of ▁National ▁High ways . ▁ ▁Ph ase ▁V : ▁Appro ved ▁in ▁October ▁ 2 0 0 6 , ▁it ▁includes ▁up gr ades ▁to ▁ 6 - lan es ▁for ▁,