India is working on building its first underwater tunnel below the Brahmaputra River in Assam. The tunnel is 15.6 km long and is designed as a twin-tube tunnel, while the project is estimated to cost Rs 14,900 crore.
India is working on building its first underwater tunnel below the Brahmaputra River in Assam. The tunnel is 15.6 km long and is designed as a twin-tube tunnel, while the project is estimated to cost Rs 14,900 crore.