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Context:
The Cabinet Committee on Economic Affairs (CCEA) has approved India’s first underwater road-cum-rail tunnel beneath the Brahmaputra River in Assam at a cost of ₹18,662 crore.
What is the Project?
A major Greenfield connectivity corridor featuring a long underwater tunnel to improve transport between northern and central Assam.
Project Specifications
- Total project length: 33.7 km
- Underwater tunnel length: 15.79 km
- Four-lane access-controlled corridor
- Connects:
- Gohpur (NH-15)
- Numaligarh (NH-715)
About the Brahmaputra River (Mapping Focus)
Origin
- Chemayungdung Glacier near Lake Mapam, Tibet (~5,300 m elevation)
Different Names
- Tibet → Yarlung Tsangpo
- Arunachal Pradesh → Siang / Dihang
- Bangladesh → Jamuna
Countries Flowed Through
China (Tibet) → India → Bangladesh
Indian States
- Arunachal Pradesh
- Assam
Drainage basin includes:
Nagaland, Meghalaya, West Bengal, Sikkim
