ABSTRACT
For medium to long spans, say 80 to 200 metres, arches are very competitive compared to other structural forms, while cable supported structures become of interest for longer spans. Within this span range, one also often finds inclined leg bridges, which have the simple form of a polygonal arch. References [18.2], [18.3], and [18.4] show examples of arch bridges, while Figures 3.14 and 3.15 show the two arch bridges with currently the longest spans.
