Sangen Bridge, Railway bridge at Shuparo Lake, Japan
The Sangen Bridge spans 381 meters across Shuparo Lake with a triangular truss design featuring one upper chord and two lower chords spanning seven sections.
Built in 1958 as compensation for the submerged forest railway line, the bridge operated for only six years before the transition to truck transportation in 1963.
The bridge structure became a symbol of the region, appearing on local post office stamps and representing the engineering achievements of post-war Japan.
During periods of low water levels in Shuparo Lake, the upper chord of the bridge emerges from the surface, allowing visitors to observe its structural details.
The bridge's triangular cross-section design makes it one of the few such railway structures worldwide, with a similar example found only in Düren, Germany.
GPS coordinates: 43.02533,142.10650
Latest update: May 13, 2025 10:39
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