The state cabinet has granted approval to Phase IV of the Delhi Metro Rail Project. The project involves the development of six metro corridors and 72 stations across the city. Phase IV of the project will span a total length of 103.93 km. Of this, while 66.92 km of the route will be elevated, the remaining 37.01 km will be developed underground. The corridors comprise Rithala-Bawana-Narela (21.73 km), Inderlok-Indraprastha (12.58 km), Aerocity-Tughlakabad (20.20 km), Lajpat Nagar-Saket G Block (7.96 km), Janakpuri West-R.K. Ashram Marg (28.92 km) and Mukundpur-Maujpur (12.54 km). The project will entail an investment of about Rs 500 billion and is likely to be funded by the Japan International Cooperation Agency and the state and central governments. Upon completion, Phase IV is expected to have a daily ridership of about 0.85 million passengers. At present, the final approval of the project proposal is awaited from the centre. Once the approval is received, work on the project will commence. The project is expected to be completed in six years from the date of commencement.