The Florida Marlins enter a significant chapter in construction of their new ballpark this morning, when the concrete foundation was poured for the first of 12 super columns that will support the venue's roof.

The foundation pour will be the first of a total 450 foundation pours for the $515 million, 37,000-seat ballpark project. According to a press release form the team, the concrete will be poured over an 8-foot deep, 40 foot by 40 foot hole. About 250 cubic yards was poured this morning out of a total 60,000 cubic yards for the project.

"Starting the first of 12 foundation pours means that the super columns that support the retractable roof will be erected by this fall," Claude Delorme, Marlins senior vice president of ballpark development, said in a statement.

Concrete company, Colasanti Specialty Services Inc., is to lead the foundation work.

Meanwhile, the team has awarded the contract for construction of the retractable roof to Structal-Heavy Steel Construction, a business unit of Canam Group. The company has worked on dozens of North American sports venues, including BankAtlantic Center in Sunrise and American Airlines Arena in Miami.