工程單位在金崙溪口南岸堆起了300公尺長的大沙丘 , 高約12公尺, 從海岸南方遠遠望去,以為是巨大的崩崖, Google 衛星地圖看不出來. [ 金崙大橋空拍 https://youtu.be/koRsAknlzaM ]
This video will explain everything.
The river change it's course to the southern side of bridge. River and sea wave will damage the bridge foundation. The official worried about wave will crash the bride ploe. So they put big sand dune to protect the bridge.
After 2020-01-06 the government put big sand dune to protect the bridge.