650 concrete trucks will descend on downtown St. Petersburg. Here’s why.

Starting Friday night around 9 p.m., 650 concrete trucks will drive into downtown St. Petersburg to begin pouring the foundation for the Residences at 400 Central.

The 46-story condominium and office tower from Red Apple Real Estate is set to be the tallest building on Florida’s Gulf Coast.

According to a news release from the developer and general contractor, Suffolk Construction, crews will pour more than 2 million pounds of concrete. The foundation will be reinforced by more than 5 million pounds of steel.

The process will take between 20 and 24 hours.

According to the release, it will be one of the largest concrete pours in the city’s history, second only to the construction of the St. Pete Pier.

“This is an exciting step in the construction of this wonderful project,” said John Catsimatidis Sr., founder of Red Apple Real Estate. “We are grateful for the expert staff at the City of St. Petersburg who helped to coordinate the foundation pour. We are moving quickly to build this condominium and deliver homes to all of the current and future purchasers that are buying residences in this wonderful city.”

Once completed, the Residences at 400 Central will feature 301 condos and an observation deck on the 46th floor.