Amarube Viaduct, Railway viaduct in Kami, Japan
The Amarube Viaduct is a railway bridge in Kami, Japan, stretching 310 meters between two mountains and built from reinforced concrete. The structure stands 41 meters above the valley floor and carries rail traffic along the Hyōgo coastline.
The first bridge opened in 1912 as a steel structure and served traffic in this region for nearly a century. In 2010 the old structure was replaced by the current concrete bridge.
The name comes from the local geography and has been associated with coastal rail travel for over a century. Visitors can walk through the Sky Station facility built from the former steel framework and look down at the bay below.
The structure uses transparent acrylic panels that protect trains during strong coastal winds. The Sky Station is accessible on foot and offers views across the coast and valley.
The bridge uses an extradosed system where cables run partly outside the concrete body. This method combines features of cable-stayed bridges with prestressed concrete.
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