Castielertobel Viaduct, Railway bridge in Castiel, Switzerland.
The Castielertobel Viaduct is a railway bridge that spans across the Castielertobelbach valley in Switzerland. It was built from stone with supporting iron elements to carry trains over this mountainous terrain.
The viaduct was first constructed in 1914 from stone to enable rail service through this mountain valley. Iron girders were added in 1942 to reinforce the structure against the challenging terrain.
The viaduct represents a milestone in Swiss railway engineering, demonstrating the nation's determination to connect mountain communities through advanced infrastructure.
The structure sits near the Lüen-Castiel railway station on the historic Chur-Arosa line. You can view it from nearby areas, though direct access may be limited due to its railway location.
The pillars shifted over time due to geological movement in the valley, requiring continuous monitoring with specialized measuring devices. This made the bridge a remarkable engineering response to challenging mountain conditions.
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