He was in charge of planning and constructing Charles de Gaulle Airport (Roissy) in Paris from 1967 on. On 23 May 2004 a portion of Terminal 2E collapsed, killing four people. Terminal 2E, inaugurated in 2003, is the seventh terminal at Roissy by Andreu, and has been described as one of Andreu's boldest designs. The collapse was attributed by the ad hoc administrative enquiry commission to a variety of technical causes and the lack of margins of safety in the design. Andreu blamed the collapse on poor execution by the building companies.