Chennai Metro has the unique status of integrating the airport, two railway terminals, the city’s mofussil bus station (the largest in Asia) and the MRTS (Mass Rapid Transit System). In addition, the corridors connect all the important locations along the three arterial roads of Chennai, the Anna Salai (Mount Road), E.V.R. Periyar Salai (P.H. Road) and Jawaharlal Nehru Salai (100 feet Road). The Alandur metro station is India’s first two-level elevated metro station connected by a 9.61 elevated stretch going over the clover shaped Kathipara flyover and 5.1 km running underground. A cantilever design was chosen to avoid affecting the existing foundation of the reinforced earth-wall.