Longest-ever sea bridge has steel to build 60 Eiffel Towers
The world's longest sea bridge connecting Hong Kong, Macau and mainland China, uses enough steel to build 60 Eiffel Towers, the Chinese state media reported. Nearly 4.2 lakh tonnes of steel was used to construct the 55-kilometre-long Hong Kong-Zhuhai-Macau Bridge. The project, started nine years ago, includes a 22.9-kilometre-long main bridge, a 6.7-kilometre-long tunnel and an artificial island.