RFP for Independent Engineer Services for Four Laning of Badarpur – Churaibari section ofNH- 37 & NH- 8 from Design chainage 38. 600 ( End of proposed Badarpur Bypass ) to Km. 62. 800 ( Start of proposed Nilambazar/ Cheragi Bypass ) in the state of Assam ( Package- IV ) on Hybrid Annuity Mode