  We consider a local cosmic string described by the Abelian-Higgs model in the
framework of scalar-tensor gravities. We find the metric of the cosmic string
in the weak-field approximation. The propagation of particles and light is
analysed in this background. This analysis shows that the (unperturbed) cosmic
string in scalar-tensor theories presents some analogous features to the wiggly
cosmic string in General Relativity.
