沈下橋 はねと
先人の考えた渡河方は
色々ありますが、
これは「流れ橋」
素晴らしいアイデア
A settlement bridge is a bridge that can be crossed if the water level is flowing normally, a bridge that will sink when it increases in water,
The flow bridge is a bridge that is easier to recover because the bridge piers remain even if the bridge girder (the part where the bri
dge walks) flows with increased water.