Phase III of Delhi Metro is likely to have underground stations. DMRC has begun work on finalising stations on the alignment of Phase III of metro project. However, this phase is yet to get a nod from the group of ministers.

Phase III will have a total of 28 underground stations. Around 40 per cent of Phase III will be built underground and three different stretches will pass below the existing underground metro corridors in the city. These are the underground stretches from Sarojini Nagar to INA on the Mukundpur-Yamuna Vihar corridor, Indira Gandhi domestic airport to Kalkaji on the Janak Puri West to Kalindi Kunj corridor and Mandi House to ITO stretch.

The underground stretch will be 41.044 km long. The longest underground section of Phase III will be from IGI Airport (domestic) to Kalkaji on the Janakpuri West-Kalindi Kunj corridor, which will be 17.288 km long. The Mukundpur-Yamuna Vihar corridor will have underground lines of 14.386 km and the Central Secretariat-Kashmere Gate corridor will have a total of 9.370 km underground lines.

Presently, initial tests such as geo technical surveys, soil surveys, utility tests are being conducted by specialised agencies on all the above mentioned corridors. Tenders have been finalised for the construction of the Mandi House and Janpath stations on the Central Secretariat Kashmere Gate corridor.

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