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Wind-induced vibrations of inclined cables has attracted much attention since 1980’s due to large incidents observed in existing cable-stayed bridges, of concern for their structural integrity. Predicting and preventing such large scale motions necessitates a formulation of the driving parameters of such phenomena. It is well established that rain and ice accretion have a major impact as driving conditions but there are cases of dry unstable cable vibrations that unveiled the influence of additional factors not being fully understood yet. Recent treatises ascribe possible driving mechanisms to high reduced wind speed vortex shedding, three-dimensionality of the flow with coherent wind structures propagating in an axial mode and the Reynolds number effect designating the unstable region of flow transitions in shear and boundary layer, from laminar to turbulent, with all these being possibly linked to each other.

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