For the 200m to 1000m long-span bridge, the designer can choose from different schemes: beams, frames, arches, stay cables and suspension cables, however, for the super-span bridge that exceeds 1000m, prestressing technology is required. At this time, the alternatives are the cable and the suspension cable. If the span limit reached by the cable is exceeded, the suspension bridge solution is the only choice. The double cable concept in this paper provides a new option for Bridges with main span of 3000m or longer, and briefly describes some aspects in the design of super span Bridges, such as elastic stability, wind resistance and seismic performance.