Elon Musk’s Boring Co. is the winner in a bid to build a multibillion-dollar high-speed express train to Chicago’s O’Hare International Airport. The result gives the young company a big boost in legitimacy as it tries to get transportation projects underway in Los Angeles and Washington.

The company beat out a consortium that included Mott MacDonald, the civil engineering firm that designed a terminal at London’s Heathrow Airport, and JLC Infrastructure, an infrastructure fund backed by former basketball star Earvin “Magic” Johnson, people with knowledge of the matter said. The city is expected to announce the news as soon as Thursday, said one of the people, who asked not to be identified because they weren’t authorized to speak publicly.