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2025: A Year of Megaprojects, Capped by Africa's Largest Dam and the Globe's Tallest Bridge

An image depicting the insane mega infrastructure projects, like floating highways, dams and AI models that were carried out in 2025.
Eng. Phabian Muok reviews the 2025 construction stories: the monumental GERD power project and Kenya’s urgent push for sporting facility upgrades. | Mjengo Hub
2025 was a landmark year for construction, highlighted by the operational launch of the Grand Ethiopian Renaissance Dam (GERD) and the intense push for 2027 AFCON stadiums in East Africa. Globally, the year saw the opening of the world's tallest bridge in China and a massive surge in AI-driven data center construction, signalling a new technological era.

2025 proved to be a seminal year for the global construction industry, defined by projects of staggering scale, revolutionary technology, and profound cultural significance.

The year also ends on a somber note with the passing of legendary architect Frank Gehry, who died on December 5th at the age of 96. Gehry’s deconstructivist style, which transformed buildings into fluid, shimmering metal sculptures like the Guggenheim Museum Bilbao, leaves behind an impossible legacy, reminding the world that construction is indeed high art.

Across Africa, two major infrastructure narratives dominated the landscape. Ethiopia officially launched the Grand Ethiopian Renaissance Dam (GERD), cementing its status as the continent's largest hydroelectric facility.

The Grand Ethiopian Renaissance Dam, completed in 2025. PHOTO|Mjengo Hub 

 

Costing approximately 646 billion Kenya shillings, the dam’s 5,000 megawatt capacity is a monumental achievement that dwarfs Kenya’s current nationwide generation capacity.

Simultaneously, co-hosts for the 2027 AFCON football tournament, Kenya, Uganda, and Tanzania, were engaged in a high-stakes sprint to complete and retrofit key venues. The momentum around Kenya's Talanta Stadium project in Nairobi underscores the critical role construction plays in meeting global sporting deadlines and uplifting national infrastructure.

The near-complete Talanta Stadium, Nairobi. PHOTO|Mjengo Hub 

 

Globally, 2025 showcased astonishing civil engineering prowess. China opened the Hajang Grand Canyon Bridge, which now claims the title of the world's tallest bridge. Soaring a staggering 625 meters above the canyon floor, this $280 million structure and its connecting expressway have dramatically cut a journey that once required two hours down to a mere two minutes.

On the other side of the world, North America commissioned the Gordie Howe International Bridge, a $4.4 billion cable-stayed project crucial for securing the busiest trade corridor for truck freight between the US and Canada across the Detroit River.

The industry's technological future rapidly accelerated as well. The unprecedented demand for Artificial Intelligence and cloud computing fueled a global surge in the construction of energy-intensive hyperscale data centers, representing billions in immediate new investment worldwide.

Furthermore, the rise of autonomous physical AI saw robotic systems demonstrating the capacity to 3D print an entire 200 square meter house in just 24 hours, signalling an impending disruption to both construction jobs and manufacturing tasks.

However, the year was not without its sobering moments. The catastrophic partial collapse of the Hongqi Bridge in China, caused by a landslide, served as a stark reminder of the extreme geological challenges and inherent risks involved in megastructure construction.

Even Saudi Arabia’s ambitious $500 billion NEOM project faced a definitive reality check, with its focus scaled back dramatically to an initial 2.4-kilometer segment due to ballooning costs and technical complexities, illustrating the immense challenge of transitioning futuristic renderings into functional structures.

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