The Brief O'Hare International Airport broke ground on a new $1.3 billion project. Concourse D will add 19 gates, new lounges, commercial space and a children's play area. Chicago Mayor Brandon Johnson broke ground on a new $1.3 billion concourse at O'Hare International Airport on Monday, the first major addition to the airport's terminals in more than 30 years. Designed to improve domestic and international connections, the 590,000-square-foot facility is part of a broader $8.2 billion O'Hare 21 expansion plan. Image 1 of 6 ▼Why you should care:Scheduled to open in 2028, Concourse D is expected to create nearly 4,000 construction jobs.