Construction on the Shiziyang Bridge in the Guangdong-Hong Kong-Macao Greater Bay Area reached a milestone on Friday with the installation of its first steel beam. It is the first of many that will one day hold together the world's tallest double-deck suspension bridge.

At 2,180 meters long, the main span of the Shiziyang Bridge is a critical component of the Shiziyang Link, itself a massive cross-sea, multi-layer highway project connecting the eastern and western banks of the Pearl River.

Once completed, the bridge will set five world records for double-deck suspension bridges in terms of main span length, main tower height, anchor foundation size, main cable scale and number of lanes.