Engineers on August 21 launched a load testing on the Huajiang Grand Canyon Bridge in southwest China's Guizhou Province, which is set to become the world's tallest bridge. 

The suspension bridge has a vertical height of 625 meters from the bridge deck down to the river surface. 

The 2,890-meter bridge, with a span of 1,420 meters, is also the world's largest span bridge to be built in a mountainous area.