Four companies have submitted bids for the work involving design and construction of an underground station at Mumbai's Bandra Kurla Complex (BKC) for the high speed rail corridor till Ahmedabad in neighbouring Gujarat, popularly known as the bullet train project, a National High Speed Rail Corporation Limited official said on Friday.

These firms are Larsen & Toubro Limited, J. Kumar Infraprojects Limited, Afcons Infrastructure Limited and MEIL-HCC Joint Venture, he said, adding the technical bids for the underground BKC station station were opened on Friday.