In fact, it is one of the only places on Earth where a train literally chases its own tail. In the heart of the Alps, engineers faced a mountain of a problem: how to get a massive train up a steep hill without using gears or expensive tunnels. The answer was a 360-degree loop that lets the engine pass right over the back carriages. Read on to learn about this ingenious masterpiece of engineering...
Fast Facts:
- • UNESCO Status: Officially recognized in 2008 as part of the Albula and Bernina landscapes.
- • The Build: Constructed entirely of local stone without any iron or steel reinforcements.
- • The Curve: The entire viaduct has a tight curvature radius of only 70 metres (230 feet).
- • Steepest Climb: It remains one of the steepest "adhesion" railways in the world without using a cog system.
SOFISTIKATEIT VISUAL ARCHIVE
"Bernina Express - Brusio Spiral Viaduct POV" — Visual by Rhaetian Railway
Surprising Secrets
- The "Cheap" Choice: Believe it or not, the loop was a cost-saving measure! Building an open-air stone spiral was significantly cheaper than blasting a tunnel through the mountain.
- Highest in the Alps: This viaduct is a key part of the Bernina Express, which remains the highest railway crossing in the Alps, reaching 2,253 metres (7,392 feet) above sea level.
- Visible Engineering: Unlike Canada’s Spiral Tunnels which are hidden inside mountains, Brusio is completely out in the open, making it one of the most photographed rail spots on Earth.
- Centuries of Strength: Despite carrying thousands of tons of modern trains every year, the original 1908 stone arches have never needed major structural reinforcement.
The Self-Chasing Train
If you look closely at the video in our archive above, you’ll notice something incredible about the scale of this engineering feat. Because the Bernina Express is often much longer than the 110-metre (360-foot) viaduct itself, passengers sitting in the back carriages can look out their window and see the engine of their own train passing directly above them on the loop. It is a rare moment where you can photograph the front of your train from your own seat without using a mirror!
From Glaciers to Palm Trees
The Brusio loop isn’t just a pretty curve; it’s a geographical "portal." The Bernina Railway is a line of extremes. In just about two hours of travel, the train descends from the high-altitude glaciers of the Ospizio Bernina—the highest point at 2,253 metres (7,392 feet)—down to the town of Tirano, Italy. Here, the landscape shifts from snow-capped peaks to Mediterranean heat and palm trees. The spiral viaduct is the "grand finale" of that descent, dropping the train the final few metres so it can roll calmly across the border into Italy.
CARRY THE WONDERS HOME ALL YEAR LONG
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