Chicago O'Hare International airport has received a letter of intent from the US Department of Transportation to support the airport's modernization programme.
The funding is being targeted for two new runways, 9C-27C and 10R28L, and the extension of runway 9R-27L.
DOT's tentative commitment of funding for the modernization scheme follows a pledge by FAA in 2005 for $337 million, bringing the total committed by the government for the airport upgrades to $747 million.
Funding for the O'Hare modernization programme is being supported through general airport revenue bonds, federal airport improvement programme discretionary and entitlement funds and passenger facility charges.
Once the O'Hare modernization is complete, the airport will feature eight runways. Six will be east-west parallel, and two will be cross-wind runways. The runway extension and two new runways should support an additional 300,000 flights per year, says the Chicago Department of Aviation.