This viaduct includes the world's longest arch (at 550 meters), crossing over the Huangpu River in Shanghai. Its name, like the other Huangpu River crossings, comes from the two districts that are connected: Luwan District to the north and Pudong District to the south. The main span is a steel, basket-handle arch with truncated deck arches at the approaches. The arch ribs are 9 meter by 5 meter steel boxes.
Shanghai's other Huangpu crossings are cable-stayed bridges, and it is said that an arch was chosen at additional expense, to provide something unique to the city. This is similar to the East Bay Bridge in San Francisco Bay which is being build at additional expense, with a self-anchored suspension span to provide something special to the Bay Area.
Another nice feature of the Lupu Bridge is that there are elevators and a guide to take visitors across the top, which is 100 meters above the Huangpu River. From the viewing platform, you can see the 2010 Shanghai Expo being constructed under the bridge.
Arch Bridges: Lupu Bridge by Mark Yashinsky is licensed under a Creative Commons Attribution 3.0 United States License.