Last month, Mumbai Metro Rail Corporation (MMRC), which is developing the project on an engineering, procurement and construction (EPC) model, had invited tenders worth Rs 129.32 crore for the civil work at the metro car depot at Aarey Colony in Goregaon.
"We have already invited bids for the depot work and it is in the final stages. Later, in December, we will invite tenders for tunnelling," MMRDA additional metropolitan commissioner Sanjay Sethi told reporters on the sidelines of the ground-breaking ceremony.
The Centre and the state will equally contribute for the remaining cost of the project, out of which Rs 777 crore will be borne by the Mumbai International Airport, since the metro will pass through the airport areas.
All barring one of the 27 stations of the metro will be underground. The one at the Aarey Colony, Goregaon on the northern fringe of the city will be at the ground level.
The 27 stations on the corridor are Cuffe Parade, Vidhan Bhavan, Churchgate, Hutatma Chowk (Fountain), CST, Kalbadevi, Girgaon, Grant Road, Mumbai Central, Mahalaxmi, Science Museum, Acharya Atre Chowk, Worli, Siddhi Vinayak, Dadar, Shitaladevi Temple, Dharavi, BKC, Vidya Nagari, Santa Cruz, Domestic Airport, Sahar Road, International Airport, Marol Naka, MIDC, Seepz and Goregaon.
The MMRDA is also planning a 40-km metro line on the Dahisar-Bandra-Mankhurd sector with an estimated cost of Rs 30,000 crore.