✔ 最佳答案
圖片參考:
http://www.tsingma.com.hk/Web_pages/Intro_tmca/tm_bridge1.jpg
青馬大橋(英語:Tsing Ma Bridge)是全球最長的行車鐵路雙用懸索吊橋,以及全球第6長的懸索吊橋。
The Tsing Ma Bridge is the world's longest span suspension bridge carrying both road and railway traffic. The bridge towers were constructed by slip forming, and the heavy steel saddles lifted into position by jacks. After completion of the temporary footbridges, which followed the line of the cables from anchorage to anchorage via the tower tops, the cables were constructed by aerial spinning. The total length of wire is enough to stretch four times round the world.