CURRENT AFFAIRS

Detailed explanation-1: -Claimed to be the first undersea tunnel in India, the 21km tunnel will be constructed at Thane creek between underground stations at Bandra-Kurla Complex and Shilphata in Maharashtra.

Detailed explanation-2: -UPSC Mains Notes: India’s first undersea tunnel is being constructed in Mumbai, as a part of the Coastal Road project of the city. It is expected to be completed by the year 2023. The twin tunnels have a length of 2.07 km of which around a kilometre will be under the Arabian Sea.

Detailed explanation-3: -After the CESC Tunnel in 1931, this is the second underwater river tunnel of Hooghly River. Besides, It is the first underwater river tunnel of South Asia and as well as India, which is made for metro rail service. The East West Metro Tunnel length is 10.8 km (6.7 mi) and width is 5.5 metres (18 ft).

Detailed explanation-4: -MMRCL has already completed 100 per cent tunnelling with 54.5 km long tunnels laid by 17 tunnel boring machines (TBM). A total of 2, 86, 000 cubic metres of concrete and 29, 500 metric tonnes of steel was used for the huge task.

Detailed explanation-5: -At over 18 km in length, the Fehmarn Belt Fixed Link - the world’s longest underwater rail and road tunnel, which will connect Germany and Denmark - is well underway.