Studio Gang, BIG, Calatrava and SOM are among twelve leading architecture teams vying to work on the Chicago O'Hare International Airport expansion. The city’s request for qualifications calls for demolishing O'Hare's Terminal 2 to replace it with a global concourse and terminal for both domestic and international flights from United and American Airlines. The city’s Department of Procurement Services estimates the total costs of the expansion process (from design through construction) will cost an approximate $8.7 billion. Known as O’Hare 21, the project represents O’Hare’s first major overhaul in 25 years.
