LONGLI, April 27 (Xinhua) -- The Longli River bridge, in Longli County of southwest China's Guizhou Province with a span of 1,260 meters, was completed and opened to traffic on Saturday. Guizhou Province, with 92.5 percent of its land covered by mountains and hills, is known as "the museum of bridges" in China due to the large number of bridges, their types and complex technologies used in the construction of the bridges.