Advantages
Because arch and tie are mainly subject to axial forces, their cross sections can be very small. Usually, transverse bending in the deck is bigger than bending in longitudinal direction. Therefore, a concrete deck that spans between the arches is a good solution for bridges with arch distances that are not too large. The concrete deck has longitudinal prestressing tendons in the arch planes.
Read more about this topic: Network Arch Bridge
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—Virginia Woolf (1882–1941)