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Assam is set to construct its first underwater tunnel, connecting Numaligarh and Gohpur at an estimated cost of INR 6,000 crore. The Detailed Project Report (DPR) has been completed, and the project is awaiting Union Cabinet approval. Spanning approximately 33.7 km, the tunnel aims to enhance connectivity and holds strategic significance due to its proximity to the Arunachal Pradesh border. The project is being implemented by the National Highways and Infrastructure Development Corporation Limited (NHIDCL) and is expected to be completed in five years.
Assam will undertake its first underwater tunnel project, connecting Numaligarh and Gohpur at an estimated cost of INR 6,000 crore. The Detailed Project Report (DPR) has been completed, and the project is awaiting Union Cabinet approval. Spanning approximately 33.7 km, the tunnel aims to enhance connectivity and holds strategic significance due to its proximity to the Arunachal Pradesh border. The project is being implemented by the National Highways and Infrastructure Development Corporation Limited (NHIDCL) and is expected to be completed in five years. Advertisement
The tunnel's alignment has been finalized, and a feasibility survey has been conducted. The depth of the tunnel is significant, with the top of the tunnel crown proposed to be approximately 32 meters below the lowest bed level of the Brahmaputra River. This project is considered India's first road tunnel beneath a major river and is expected to strengthen strategic security in the region.
The Standing Committee of the National Board for Wildlife (NBWL) has given its approval for the proposed tunnel, subject to a scientific analysis on the project's potential impact on soil stability, groundwater flow, sediment dynamics, and seismic vulnerability. The Ministry of Road Transport and Highways (MoRTH) has prepared the DPR, which has been technically appraised by the Project Appraisal and Technical Scrutiny Committee (PATSC) in NHIDCL.
Given the scale and complexity of the project, a construction period of five years is expected after the award of the project. The final approving authority is the Cabinet Committee on Infrastructure, headed by the Prime Minister.
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