In this work the results of investigations into how to optimise a network arch for the special demands of railway traffic are presented. Network arch bridges have inclined hangers that cross each other at least twice. The beneficial structural behaviour leads to slender bridge members mainly subjected to axial forces. Structural parts above the bridge deck are therefore more likely to be tolerated. Furthermore, the high stiffness and therefore small deflections favour the application of network arches for railway bridges. Stress ranges caused by the load character of railway bridges require special considerations for the design. Adequate solutions are elaborated considering as an example a double track railway bridge spanning 100 meters. (ct)