The source, who asked to remain anonymous, told Reuters that the
joint design by Foster and Fernando Romero had won the contract.
Mexico's airport operator ASA, which is overseeing the tender,
declined to comment.
Arturo Elias, Slim's spokesman and son-in-law, told Reuters in
late May that a design fronted by Foster and Romero was among a
handful of bids submitted.
Mexican President Enrique Pena Nieto earlier on Tuesday
announced plans for the new, six-runway airport, saying the
city's current airport is overburdened.
He said the new airport will eventually be able to handle up to
120 million passengers a year.
The design contract is worth a fraction of the overall $9.15
billion airport project.
Romero, who is married to Soumaya Slim, a daughter of Carlos
Slim, one of the world's richest men, is the head of FR-EE
Fernando Romero Enterprise.
The firm designed Mexico City's distinctive Museo Soumaya, which
houses much of Slim's personal art collection behind its
sloping, silvery walls.
Slim, who controls Mexican telecoms giant America Movil, is
behind a diversified empire that spans mining to banking and
Foster is one of the world's most famous architects, and his
practice, Foster + Partners, has designed dozens of high-profile
projects around the world, including Beijing Airport and
London's Wembley Stadium.
(With reporting by Gabriel Stargardter and Dave Graham; Editing
by Simon Gardner and Michael Perry)
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