The National Highways Authority of India (NHAI) has invited bids for the widening and improvement of the existing carriageway to four lanes on the Kaliabor–Numaligarh section of NH-37 (new NH-715), covering chainage from km 315.315 to km 400.990 in Assam.
The contract worth Rs 4,829.14 crore is to be executed under engineering, procurement, and construction (EPC) mode, with a completion period of 36 months and a maintenance period of 10 years. The project includes the implementation of wildlife-friendly measures along the Kaziranga National Park (KNP) stretch to mitigate ecological impact , while enhancing road connectivity in Assam, in line with NHAI’s sustainable infrastructure development goals.
The closing date for bid submissions is 03 December, 2025.