Renovations to the Kentucky-based track will be split into three projects, the Skye Reconstruction and Expansion Project (“The Skye Project”), the Conservatory Project, and the Infield General Admission Project.
A predicted £367m is set to be invested in the Skye Project, £260m into the Conservatory Project and a further £43m into the general admission areas.
That project plans to add three new infield buildings to provide "enhanced amenities" to general admission guests.
The Skye Project will focus on seating just past the finish line, replacing 11,500 existing seats with 13,300 new ones, alongside premium hospitality experiences.
CDI chief Bill Carstanjen said: "These projects as well as key infrastructure improvements, reflect the company’s commitment to providing world-class hospitality and premium seating options for guests for many decades to come.