Tender issued for India’s first undersea tunnel for bullet train

The National High Speed Rail Corporation Limited (NHSRCL) has invited bids for India’s first undersea tunnel, which is part of the Mumbai-Ahmedabad bullet train corridor. The bullet train which will cover a distance of 508 km between Mumbai and Ahmedabad has a 21 km underground corridor. Going by the tender, the work has to be completed within 1,280 days or 3.5 years. The tender is for construction of tunnelling works including testing and commissioning for double line high speed railway using tunnel boring machine (TBM) and new Austrian tunnelling method (NATM) for the project.

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