中国的城市交通将走向何方，已经成为当前城市基础设施建设的一个重要问题。不断新建和改建的城市道路，大量高架路和立交桥的兴起，成了当前城市建设中的又一热门。自从北京率先在二环路上建起了高架路和立交桥之后，不少大中城市也纷纷仿效，将其作为解决现代交通的重要手段 China's urban transport will go to where, has become the current urban infrastructure construction is an important issue. The continuous construction and renovation of urban roads, the rise of a large number of viaducts and overpasses have become another hot topic in the current urban construction. Since Beijing first took the viaduct and overpass on the Second Ring Road, many large and medium-sized cities have followed suit and used it as an important means of solving modern traffic problems