As it became known corr. Xinhua at the Institute of Archaeology of Shaanxi Province / Northwest China / followed lasted 9 months of archaeological work and soundings, among the ruins of the ancient capital of the Han Dynasty — city of Chang'an and the remains of the Imperial Palace in Syanyane / capital of the Qing Dynasty / north-west of Xi'an City , in keeping with the ancient river Wei, have been found by archaeologists in turn 5 ancient wooden bridges, divided into 2 groups, whose age is more than 2000 years.
According to the Institute of Archaeology of wire. Shaanxi Wang Zhiyu found the ruins of the ancient wooden bridge on the river Weihe ambitious, have a complete structure, preserve order in the arrangement, rich in internal content. At the same time, they are the largest remnants of wooden bridge structures Han and Qin dynasties, including the detected until now, in fact they are the same and the largest wooden bridge structure of this historical era in the world.
On the bridge, "Chuchenmen-1" located in Chuchenmen, found a large number of stone structures rectangular and pentagonal and their related archaeological remains. Obviously, this bridge is a rare example of simultaneous use in the construction of wooden and stone materials, the concept and technology of its construction occupy a very important place in the history of bridge construction in ancient China and around the world.
At the moment, except for the bridge "Chuchenmen-2", for which there can not start digging, and just recently discovered bridge "Chuchenmen-4", archaeologists have been researching and partial excavation of the other three bridges.
According to Wang Zhiyu lessons on cultural relics can be assumed that the start of construction of ancient bridges were in the Qin Dynasty, they were used in the Han Dynasty until the Tang dynasty or even later Song Dynasty, so until they were abandoned passed more thousands of years. In addition to the sand deposits on the surface of the bridge were found pieces of porcelain "Tsinghua" that allows you to make the assumption that the bridges were not completely filled up until the time of the Ming Dynasty.