The National High Speed Railway Corporation Limited (NHSRCL) has began the bidding process for the construction of an underground station at Bandra-Kurla Complex (BKC) for the Mumbai- Ahmedabad High Speed Rail Corridor, an official said, according to the PTI. The NHSRCL on Friday invited bids for the design and contruction of the underground tunnel. 

"Bids invited for design and construction of Mumbai underground station and tunnels for Bullet Train," railway minister Ashwini Vaishnav said in a tweet.