Developers OKO Group and Cain International

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Construction is progressing on what will become Miami’s deepest, most expensive underground parking garage. Reaching nearly 15 m (50 ft) and three stories below sea level, the 9290-m2 (100,000-sf), 236-car garage for the Una Residences condominium will cost $25 million to build.

The first-of-its-kind subterranean parking garage, set on the edge of the Biscayne Bay waterfront, will become a key element of the 47-story luxury residential tower when complete in 2023.

enlisted Adrian Smith + Gordon Gill (AS+GG) to design Una Residences. The 176-m (579-ft) tall tower was envisioned to embody the spirit of the city and the aesthetics of the Brickell neighborhood’s urban, waterfront environment. The building’s grand, double-height lobby was designed with 6-m (20-ft) tall glass windows that frame the views of the bay, with a resort-style amenity rcs data pool deck set directly above, facing the water and surrounded by shady trees and lush foliage.

This open waterfront concept could only be realized by ‘hiding’ the parking garage underground—a challenging and costly approach that contrasts sharply with typical condominium developments in South Florida, which tend to feature a pool deck situated high atop several levels of parking. To create the underground structure, the development, design, and building teams worked closely together to determine the best method for subterranean construction in such close proximity to the bay.