Miami’s Most Expensive, Deepest Underground Garage Now Underway At The 47-Story Una Residences In Brickell

There’s never been an underground parking garage built like this anywhere in Miami.

Una Residences in Brickell is getting a 100,000-square-foot, 236-car garage that reaches nearly 50 feet and three stories below sea level. The cost: $25 million for the garage alone – triple the expense of a normal garage, according contractor Civic Construction.

The benefit of going underground will be seen in the aesthetics of finished product, developers say. A grand, double-height lobby with 20-foot-tall glass windows will overlook a pool deck set directly above Biscayne Bay – instead of being atop an ugly garage.

Building a subterranean garage like this not only costs money, but also takes time. It will take around a year and a half to build, and it won’t be until late 2021 when ground-level vertical construction begins, even though groundbreaking took place earlier this year.

The garage is now being built by the building’s general contractor, a joint venture between Civic Construction and Ant Yapi U.S.

The plan to build the massive watertight concrete box deep underground requires highly advanced technology and equipment, they say.

Workers will drill 800 holes 50 feet deep into the ground and then fill them with concrete and water. The interlocking pillars create a cement block that is hollowed out to build the garage.

Following the building’s groundbreaking earlier this year, the construction team embarked on the deep-soil-mixing construction process to create a giant waterproof “bathtub” that protects the building’s concrete mat above the tub from groundwater and forms the base of the garage. Engineers are now using a state-of-the-art, 10-foot high-torque drill to create the bathtub by digging into the site’s crushed limestone, while simultaneously injecting cement slurry into the ground and blending it with the limestone rock and sand. This process changes the composition of the soil, creating a support system for the bathtub’s walls and floor while ultimately reducing waterflow and permeability to allow for excavation of the site.

Once the soil mixing process and tub is complete in early 2021, the construction team will begin drilling piles 135 feet deep into the ground to support the tower, and to hold down the floor of the tub during construction. The loose-mix soil inside of the tub will then be mass excavated – a three-month-long process – to reveal the new, waterproof underground form. Once the site is excavated, the building’s steel mat foundation will then be constructed followed by a massive concrete foundation pour. Once the three levels of vertical columns are completed in the underground basement, ground-level vertical construction will then commence, estimated to take place in late 2021. From there, the tower’s rise will move at a fairly quick pace, accelerating approximately one level a week through top off of the 47th floor in late 2022.

“OKO Group has extensive experience with subterranean construction, with our firm’s Capital City mixed-use development in Moscow encompassing a six-level garage for over 2,000 vehicles built 72 feet deep underground adjacent to the Moscow River,” said Ahmet Oktay Cini, Chief Operating Officer of OKO Group. “When conceptualizing the design for Una Residences in Miami, we envisioned a similar urban-style, efficient tower that would maximize as much space as possible for the use of residents and showcase the site’s waterfront views. The result was a modern condo tower without a parking podium, meaning more square footage for luxury amenities and residences.”

The tower will eventually top off at 579 feet above ground. It is being designed by Adrian Smith + Gordon Gill architects.

A total of 135 condos are being built, priced from $2 million to $7.4 million, with penthouses up to $21.6 million. Completion is scheduled for 2023.

Oko Group and Cain International are the developers.

 

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Anonymous
4 months ago

Glad to see a new developer coming in with unique ideas. Most of the buildings in brickell have parking above ground. Excited to see how this turns out

Anonymous
4 months ago

It’s going to be a very expensive endeavor to keep the water out of this garage.

Anonymous
4 months ago

Brickell Citi Center’s massive underground garage construction FROZE the soil and water so they could build. That technique was the first time it was used in SoFla, maybe the U.S.

Anonymous
4 months ago

The ground freeze method at BCC did not meet expectations and was replace with soil mixing.

Hugh G. Rection
4 months ago

I can’t wait to go scuba diving in the garage. I might even take my boat in there.

Anonymous
4 months ago

That is one sexy ass building! If I was a building I would definitely have sex with it!

Anonymous
4 months ago

The “iconic” Ferris wheel is ahead of you in line.

Anonymous
3 months ago

🤣🤣🤣🤣🤣🤣🤣

Anonymous
3 months ago

Dafuq?

Anonymous
4 months ago

Love the building.
I do not like the parking below sea level.
The garage will fill up like a soup bowl if a major hurricane.

Anonymous
4 months ago

Beautiful design and iconic addition to the skyline its amazing what technology allows us to build…

Anonymous
4 months ago

And then along comes a hurricane…

Anonymous
3 months ago

Touche

POLO
4 months ago

Simply one of the must stunning towers in Miami U/C right now!

William
4 months ago

Good looking building. The garage maintenance will be super expensive also. 20 years from now, they will have pumps running 24 hours a day. The pool being in the back is a bit odd. Usually they want to capture the views from there. I guess the apartments facing the water make sense since its something that has an immediate payback. HMMM

Anonymous G
4 months ago

One in the back and one facing the bay.

Tweety
4 months ago

The pool will be facing East-ish and will get the most sun exposure available for the lot.

Anonymous
4 months ago

I like that car in the picture.

Anonymous
4 months ago

I’m skeptical. Nice design for the superstructure, but to spend all that money on a parking garage to be 50 feet under the water line? The future HOA better have great insurance and have a great 551 plan of attack. There aren’t many hurricanes in Moscow, so I wonder if it was good planning NOT to have a Florida engineering firm have a hand in this design? If this works, great.

Jack
3 months ago

I’m sure the developers and their consultants know the risk. Probably paid $50k for the geotechnical report

Anonymous
3 months ago

Need to lock some funds up in concrete? What better way…

Anonymous
4 months ago

Man, you gotta love dem cars for something like this.

Anonymous
4 months ago

beautiful, and visible from my balcony

Anonymous
4 months ago

What is the difference between this garage and the underground garage that Faena district on Miami Beach did 5 years ago?

Anonymous
3 months ago

One garage was hit by a hurricane.

Anonymous G
4 months ago

This is a beautiful building. Going to be an awesome job site.

Jack
4 months ago

f*cking sick…

Anonymous
4 months ago

oh yeah turns me on. Use that torque drill, drill those holes.

Anonymous
4 months ago

could you please leave this site forever and never come back

Anonymous
4 months ago

Drill deep into my bathtub and I will splash all over you

Anonymous
4 months ago

you are not human

Anonymous
3 months ago

Are you mental? I’m just wondering

Anonymous
3 months ago

Its all about the rich we have VA that have served our country and they cant even fet colostomy bags after surger with their intestines hanging out.BS this sucks

Anonymous
3 months ago

The performance of Trump in that wannabe worldclass city is proof of the low level education level down there. You just can’t dress up a pig in the end.

Anonymous
3 months ago

You aren’t being thorough enough. Trump has caused the office markets, the auto industries, and even the condo market to rise ever since 2016. I don’t see how your statement is considered to prove that Miami is full of low level education officials.

Anonymous
3 months ago

Trump didn’t cause anything except the koolade drinkers brains to go into full gullible mode from his steady dose of conning.

Anonymous
3 months ago

That’s exactly what Joe Biden did. He tries to brainwash other people with sympathy. Look at how the democrats wanted the BLM and ANTIFA protests to happen. They were in charge of those protests because they were the ones earning money from the donations themselves.

Anonymous
3 months ago

“Look at how the democrats wanted the BLM and ANTIFA protests to happen. They were in charge of the protests because they were the ones earning from the donors themselves.”

Excellent example of how you republicons just through any kind of accusation without showing any names or proof.

Anonymous
3 months ago

Why dont they build shelters for the homeless and affordable housing for the mental illness and also the elderly.Redicouls.

Anonymous
3 months ago

Whoever they is needs to spend their money teaching you how to spell.

Anonymous
4 months ago

The building sticks out like a sore thumb relative to the surrounding buildings. Not optimistic that the garage will survive the Biscayne Bay overflows.

J.
4 months ago

Glad I’m not the only one who noticed that. It seems very out of scale for the area.

Anonymous
4 months ago

This is the first new building in the older part of Brickell. The older buildings will be getting knocked down as new buildings are going up.

Anonymous
3 months ago

There are four more buildings on that street, all hoping a developer buys them out too.