A worker checks hydraulic device at the construction site of steel truss girder of Jinan Yellow River railway and highway combined bridge in Jinan, east China's Shandong Province, Jan. 25, 2016. The double-deck bridge, with a two-way six-lane highway and four railway tracks, is a part of Shijiazhuang-Jinan passenger railway line. (Xinhua/Xu Suhui)