The National High Speed Rail Corporation of India (NHSRCL) on Friday said it has invited bids for 21-km-long tunnel, including India’s first 7-km-long undersea tunnel, in Maharashtra for Mumbai-Ahmedabad High Speed Rail Corridor.
The bid is for tunneling works using Tunnel Boring Machine (TBM) and New Austrian Tunneling Method (NATM), it said. The tunnel would be between underground station at Bandra-Kurla Complex (BKC) and Shilphata in Maharashtra.