Extending across six underground stations, Delhi Metro Line 2 runs through the heart of Delhi's business district

We provided civil, architectural, mechanical and electrical design for the Delhi Metro Line 2 extension. This involved a 6.5km section of tunnels and six stations. The extension opened in July 2005 and the project required close co-operation between our teams working in Delhi and the UK. It went on to win International Project of the Year Award at the UK Tunnelling Industry Awards 2005.

Following the successful delivery of the extension, Mott MacDonald won a further contract for the detailed design of all structural and architectural elements for Mandi House metro station, which opened in 2006. The station is located under a busy thoroughfare and in order to minimise traffic disruption much of the station was built top-down.

In December 2007, Mott MacDonald was appointed to provide detailed structural and civil designs for part of the Delhi Airport Metro Express Line. This £94 million project – part of the Delhi Mass Rapid Transit System – will connect New Delhi Station to airports serving the Indian capital and will be completed in time for the 2010 Commonwealth Games.

Our work will include underground station boxes that will have three-storey-deep reinforced concrete walls, a seven storey above-ground car park, twin bored tunnels, cut-and-cover tunnels, and underground and above-ground ancillary buildings.

A particular challenge will be alignment where the rail level is around 44m below ground level and crosses underneath the existing Connaught Place Station, which also crosses the north/south and east/west corridors designed by Mott MacDonald during the first phase of the metro development.