The Union Cabinet has approved construction of 4-lane access controlled greenfield and brownfield Patna- Arrah-Sasaram corridor starting from Patna to Sasaram in Bihar. The length of the corridor is 120 km and will be built at the cost of ₹3,712.40 crore. The project will be developed on Hybrid Annuity Mode (HAM) and will also generate 48 lakh man days employment.