Lanzhou Zhongshan Bridge, commonly known as "Zhongshan Iron Bridge", "Yellow River Bridge, located in Lanzhou Riverfront middle of the road north the Baita foot of the mountain, was built in 1907 AD, gold Chengguan (Qing Guangxu 33 years), is the oldest Lanzhoubridges, the bridge is 5464 km Yellow River the first one the true meaning of, and thus known as the Yellow River bridge. Zhongshan iron bridge 234 meters long, 7.5 meters wide, 5 holes of the iron bridge with six piers, the bridge puts up 5 arc-shaped steel frame arch beam. Under the auspices of l Yun Qing Guangxu 33 years (1907), the Qing government in Lanzhou Tao Peng League recommendations and Gansu Governor, the use of treasury silver, three hundred and six thousand more than a thousand two by Duk Taylor Matheson Ka Yousi construction, Americans are full Po, the German der Rohe for technical guidance, built the first Yellow River Iron Bridge, the beginning of Lanzhou Yellow River Bridge ".
The Songhua River Bridge Binzhou railway throat. At that time, the bridge's funding comes mainly from the strength of the Russo-Chinese Bank. Bridge on May 4, 1900 held a grand ceremony started, start when the bridge was at home and abroad a handful of large railway bridge, very sensational. Bridge is a total of 19 holes, 7.2 m wide, total length of 1015.15 meters. Piers for the gypsum lime masonry, granite cladding. Responsible for bridge construction engineers Alexei Lavrov, and recruited 350 caisson workers engaged in the pier foundation caisson construction. 18 piers of the bridge truss, Warsaw, Poland iron manufactured, shipped from Russia Odessa to Vladivostok the wusuli railway arrived Iman Hong Kong, and then shipped along the Ussuri River and the next Su Heilongjiang, Songhua River transported to the bridge site, assembled erected at the scene. October 2 temporary opening of the year and four months of construction, see completed on September 19, 1901, opened to traffic operations on July 14, 1903. Completed since 1901, so far, has been 110 years of history, in which the story a lot.
Maqu county is located in the southwest of Gannan Tibetan Autonomous Prefecture, Qinghai Province, Western and Indian gander, county border, Southeast of Sichuan Province, ABA County in Ruoergai and across the Yellow River, the northwest abuts Qinghai province Henan Mongolia Autonomous County, with the county to the Northeast state. East Maqu County by the100° 46 ' - 102° 29 ′north latitude 33 °06' to34° 33'. Low-lying West High East, from northwest to Southeast tilt, at an elevation of 3300to 4806 meters. The climate is cold and humid type. Long summer without winter, cold weather is characterized by. Average annual temperature of 1.1℃, annual rainfall of 615.5mm, frost-free period19 days only relative.