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The 10 biggest mega build disasters of 2025

Fred Mills doesn't just list construction failures; he exposes a global pattern where ambition consistently outpaces engineering reality, turning 2025 into a cautionary year for the world's most expensive concrete. While the video format allows for dramatic visuals of sinkholes and stalled tunnels, Mills' commentary cuts through the spectacle to reveal a systemic crisis of governance, budgeting, and basic physics that threatens the very infrastructure we rely on.

The Illusion of Control

Mills opens with a stark reminder of the human element often lost in mega-project narratives. "It's because thousands of skilled, hardworking people in this industry get up every day to shape our world and kind of make it look easy, but it's not." This framing is crucial; it shifts the blame from individual incompetence to the sheer, overwhelming complexity of modern engineering. The Bangkok Metro disaster illustrates this perfectly. A 50-meter sinkhole swallowed a street near a major hospital, yet Mills notes the "first clue something was wrong came early in the morning when water was seen welling up on the road." The tragedy here isn't just the collapse, but the missed warning signs that were ignored until it was too late.

The 10 biggest mega build disasters of 2025

The commentary then pivots to the absurdity of architectural overreach with Manchester United's proposed stadium. Mills captures the public's skepticism with biting wit: "Add to that the team's recent performance and the headlines kind of wrote themselves." The project, designed by Norman Foster, was a "vast 100,000 seat stadium sheltered under a huge umbrella capable of harvesting sunlight and rainwater," which critics mocked as a "huge circus tent." The eventual decision to scrap the roof highlights a recurring theme: political and public pressure can force a retreat from visionary designs, but only after millions are wasted.

"Once you're in a hole, you really should stop digging."

The Saudi Paradox and the Cost of Speed

Perhaps the most striking section covers Saudi Arabia's NEOM project, specifically "The Line." Mills observes that while the world said it could never be done, Saudi Arabia replied, "Well, not quite, but kind of." This diplomatic phrasing masks a brutal reality. The Financial Times reported that work has "grown to a halt on almost all NEOM projects," with costs running "trillions of dollars over budget." The sheer scale of the miscalculation is staggering. Even a project as seemingly niche as Traina, a desert ski resort, is stuck because the developer is "still looking for someone to build it" less than four years before the Asian Winter Games.

Critics might argue that these projects are merely long-term investments with high upfront risks, but the halt in construction suggests a fundamental break in the feasibility model, not just a delay. The narrative shifts to Australia's Snowy Hydro 2.0, where a tunnel boring machine named Florence got stuck in "unexpectedly soft ground." The CEO's admission, "we just didn't know it was that soft," sounds almost comical until one considers the cost blowout that saw the budget "double to nearly $8 billion US in just 6 months." The subsequent safety failures regarding refuge chambers underscore a dangerous pattern: rushing to meet deadlines often compromises the very safety protocols designed to prevent catastrophe.

Geopolitics and the Fragility of Infrastructure

The stakes rise dramatically when Mills turns to Ukraine, where a drone attack on the Chernobyl shelter caused a fire that took weeks to extinguish. "The blast ignited the shield's cladding, causing a fire to spread internally throughout the roof." While Mills notes there is "no immediate danger," the long-term outlook is grim: "it looks unlikely the shield can never be fully repaired." This is not a construction error but a war-induced failure, yet it fits the broader theme of infrastructure vulnerability. The same fragility appears in the diplomatic saga of the Chinese embassy in London, a project stalled by "gigantic unmarked basement" fears and political scandals, leaving the timeline in limbo.

In the UK, the Hinkley Point C nuclear plant faces its own unique absurdity: a "700 million pound acoustic deterrent aimed at protecting local marine life" that the press dubbed a "fish disco," estimated to save "one salmon every 12 years." This detail serves as a powerful metaphor for the misallocation of resources in mega-projects. Meanwhile, Germany's Stuttgart 21 rail project, once a symbol of engineering prowess, is now stuck because the tunnels are laid to a gradient of 1.51%, far exceeding the 0.25% maximum, meaning "trains could start rolling away from the platform under their own momentum."

"The country may have invented the railways 200 years ago, but it's not gone very well since."

The American and British Rail Quagmire

The final section tackles the United States and the UK's rail nightmares. California's high-speed rail is bogged down by land costs and political warfare, with the president attempting to claw back "over $45 billion US in federal funding." Similarly, New York's Hudson Tunnel Gateway program saw its funding frozen during a government shutdown, with the president declaring he had "terminated the project." But the most damning example is Britain's HS2. Once a promise to link London to the north, it is now "335 km shorter, $68 billion pounds more expensive, and no one really knows when it's going to be finished." The decision to de-prioritize a 29 km section, meaning it won't be finished for another four years, suggests the project is effectively a zombie, kept alive by inertia rather than logic.

Bottom Line

Mills' strongest argument is that these disasters are not isolated anomalies but symptoms of a global culture that prioritizes the announcement of a project over the feasibility of its execution. His biggest vulnerability is the reliance on a "fail compilation" format, which risks oversimplifying complex geopolitical and economic drivers into mere engineering gaffes. Readers should watch for the next wave of cancellations, as the 2025 data suggests the era of the unbuildable mega-project is finally, painfully, ending.

Sources

The 10 biggest mega build disasters of 2025

by Fred Mills · The B1M · Watch video

Well, what a year that was. 2025 was huge for construction. We've seen things go up, things come down, and pretty much everything happen in between. It's because thousands of skilled, hardworking people in this industry get up every day to shape our world and kind of make it look easy, but it's not.

Sometimes things can go wrong. And look, we love talking about what makes this industry great. So, it's not that we want to make a big deal out of it, but it's the end of the year and everyone loves a big roundup video. So, here are the 10 biggest construction disasters of 2025.

First up, you may remember this. >> It was the dramatic moment in September when a huge sinkhole tore open a street in Bangkok. 40 m beneath the surface, work was progressing on this, a new extension to the Bangkok Metro's Purple Line. Here's the location of the new Vajira Hospital Station.

The problem started when work connecting the tunnel to the station hall ruptured the ceiling, causing the tunnel to collapse. The first clue something was wrong came early in the morning when water was seen welling up on the road. Then, at 7:13 a.m., this happened. A massive 50 m deep sinkhole opened up large enough to swallow the leaning tower of Pisa.

And if that wasn't bad enough, what was the name of that station again? That's right. This is where the sinkhole opened up. And this is Vajara Hospital, home to around 30,000 inatients and 700,000 outpatients every year.

The hospital was immediately evacuated. And fortunately, there were no casualties. Work on the tunnel was paused immediately and is yet to continue. Now, statistically, most of you watching this video are American.

But still, a few of you may recognize this. Old Trafford, home to Manchester United, one of the greatest football teams in the world. Or at least they were until their legendary manager retired in 2013. And they've kind of been rubbish ever since.

So, like any club would do when their team is underperforming, they decided to build a huge brand new multi-million dollar stadium. Britain's most famous football club turned to Britain's most famous architect and the coolest guy you've ever seen in a purple suit, Norman Foster. This is what he came up with. A vast 100,000 seat stadium sheltered under a huge ...