The Huajiang Grand Canyon Bridge in Southwest China's Guizhou Province - set to become the world's tallest bridge - will open to traffic on September 28 after three years of construction. Construction workers are putting the finishing touches on the structure, which stretches 2,890 meters long with a 1,420-meter main span. Rising 625 meters above the river, it will become both the world's tallest bridge and the world's largest-span bridge built in a mountainous area. Photos: Chen Tao/GT