China has officially opened the world's highest bridge in the world to the public. The Huajiang Grand Canyon Bridge towers 625m (2,050ft) above a gorge in the country's Guizhou province. Officials say it cuts travel time between the canyon's two sides from two hours to two minutes. Earlier this year in August, a testing team drove 96 trucks onto designated points to test the bridge's structural integrity. The bridge has now set the record for both the world's highest bridge and largest span brid