The city's development agency has finalised eight locations where the stations for the fourth Metro corridor will come up.
The 8.8-km Charkop-Dahisar Metro corridor is estimated to cost Rs 1,575 crore and its stations will be located at Kamraj
Nagar, Ekta Nagar, Kastur Park, Don Bosco School, LIC Colony, IC Colony, Dahisar and Anand Nagar.
The Mumbai Metropolitan Region Development Authority (MMRDA) plans to undertake the construction of all nine Metro corridors simultaneously to take some of the pressure off the trains and the roads, while improving east-west connectivity.
Work on the detailed project report of the Charkop-Dahisar line will be ready by August-end and tenders are likely to be floated by 2011.
This corridor will connect to the 32-km Charkop-Bandra-Mankhurd corridor thus providing direct connectivity from Dahisar to Mankhurd.
"This Metro line will improve both south-north and east-west connectivity," said Additional Metropolitan Commissioner S.V.R. Srinivas.
While work on the Versova-Andheri-Ghatkopar Metro corridor is at an advanced stage, the soil testing for the second corridor from Charkop to Mankhurd via Bandra is almost complete.
The agency has submitted a proposal to the Centre seeking its in-principle approval to begin the tender processing for the third Metro line - the Colaba-Bandra corridor.
The remaining five Metro corridors are Ghatkopar-Mulund, BKC-Kanjurmarg, Andheri (East)-Dahisar (East), Hutatma Chowk-Ghatkopar and Sewri-Prabhadevi.
The agency had planned to complete all nine corridors by 2021, bust now officials say they are looking at running all the nine Metros by 2016.
Last month, the state government sought Rs 20,000 crore loans from the World Bank and the Japan Bank of International Cooperation to start work on the remaining six Metro corridors simultaneously.