Sentosa Causeway
The 928th tallest dam in the world
The Sentosa Causeway is a 380-metre (1, 250 ft) causeway connecting mainland Singapore to the island of Sentosa. Initially as two separate links to Pulau Brani and Sentosa from the mainland, it was merged into one link in December 1986. There was debate over whether the link should be a causeway, bridge, or tunnel, with the tunnel allowing ships to pass through the Keppel Channel, though more expensive, whilst the causeway or bridge would be cheaper and more visually appealing. Although the government leaned to the tunnel, it was decided in November 1987 and February 1988 that the Pulau Brani and Sentosa links will be a causeway, respectively, as a causeway for the Pulau Brani link would reduce land transport time for cargo. The causeway opened on 16 December 1992.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).