 On 12 July 2009 , a section of bridge collapsed while it was being erected at Zamrudpur , near East of Kailash , on the Central Secretariat – Badarpur corridor . Six people died and 15 were injured . The following day , on 13 July 2009 , a crane that was removing the debris collapsed , and with a bowling pin effect collapsed two other nearby cranes , injuring six . On 22 July 2009 , worker at Ashok Park Metro station was killed when a steel beam fell on him . Over a hundred people , including 93 workers , have died since work on the metro began in 1998 . 
