China is not just cheap and economical; it can pleasantly surprise you with its engineering class. It has not failed to surprise just recently when a part of a huge overpass in China was gradually swiveled in its place upon its completion. Mind you, this is the first time a technique such as this has been used in Asia but only the second the world over. Previously, it was used in England in 1968 for the construction of Kingsgate Bridge as two halves of the bridge were swiveled into place by as much as 90 degrees.
The reason for the rotation of the overpass was to prevent the high speed railway track below from being disturbed. Hence, the flyover area was to go parallel to the railway track. Engineers were able to lift 17,000 tons of structure across 15 meters by rotating it by 106 degrees in order to establish connection with highway lane in merely an hour and a half. Swing bridges like these allow any structure to rotate horizontally as they are held by a support ring and vertical locating pin. Once the overpass in question is completely built, it will be 256 meters in length while spanning 11 railways.
Many experts all over the world believe that the overpass should be expected to be operational in atleast a month or so. Considering the renowned high speed railway network that China has, this move was pretty much inevitable to retain its significance as the best in the world. Here is hoping it all turns out well.