RailUSA first purchased the Grenada Railroad from Iowa Pacific with plans to restore and re-open the 87-mile southern portion of the line, which had been closed since 2011.
[3] On March 1, 2023, RailUSA announced they would relocate to Jacksonville, Florida, and change their name to Gulf & Atlantic Railways, showing focus on new growth.
[5] In August 2023, Macquarie Infrastructure Partners reached an agreement with the Pinsly Railroad Company to acquire a 6th short-line, Pioneer Valley Railroad, through its subsidiary Gulf & Atlantic Railways.
[6] This acquisition also included a warehousing company, Railroad Distribution Services.
On August 20, 2024, they entered into a definitive agreement, subject to regulatory approval, to acquire Hondo Railway.