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Brahmaputra Underwater Road-Rail Tunnel: ₹18,662 Crore Project

18 February 20261 min read
NATIONAL AFFAIRSBrahmaputraUnderwaterRoad-Rail Tunnel:₹18,662 Crore Project18 February 2026safalsetu.com

Why in the news

The Cabinet Committee on Economic Affairs sanctioned a greenfield corridor with a long tunnel under the Brahmaputra, linking northern and central Assam.

Key facts

  • Approved by: CCEA; cost ₹18,662 crore.
  • Length: 33.7 km in total; 15.79 km under water.
  • Design: four-lane, access-controlled road-cum-rail corridor.
  • Ends: Gohpur on NH-15 and Numaligarh on NH-715.

Brahmaputra for map questions

  • Origin: Chemayungdung Glacier near Lake Mapam, Tibet, about 5,300 m high.
  • Names: Yarlung Tsangpo (Tibet), Siang/Dihang (Arunachal Pradesh), Jamuna (Bangladesh).
  • Flows through China, India and Bangladesh; Indian states on its course: Arunachal Pradesh and Assam.
  • Basin also covers Nagaland, Meghalaya, West Bengal and Sikkim.

Exam angle

  • First of its kind: underwater road-cum-rail tunnel.
  • Match the river’s local names.
  • Highway links: NH-15 and NH-715.

Test yourself

1. Which body approved India's first underwater road-cum-rail tunnel under the Brahmaputra?

The CCEA cleared the project.

2. What is the Brahmaputra called in Bangladesh, per the project notes?

In Bangladesh the river is known as Jamuna.

3. What is the length of the underwater tunnel stretch in the Brahmaputra road-cum-rail project?

The tunnel is 15.79 km within a 33.7 km project.

This topic is part of Daily Current Affairs 17 February 2026 (22 topics).

All topics of the dayDay quizFebruary 2026

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