Abstract : Structural Health Monitoring (SHM) has been invented by aeronotic engeeniers is now an intense research topic for civil engineers. As the nervous system in the human body, a huge sensor network is detecting damages to produce health diagnostics. To do so, optical fiber sensors (OFS) took advantage of telecommunication developpments of the end of the 90's. Among them, Distributed OFS, wherein a single fibre (withoout any component) constitues the transducer, brought a real breakthrough avoiding any dead zone within the sensing chain and offering a unique multiplexing capacity. This work, performed with EDF R&D, LCPC (french laboratory on roads and bridges), and Télécom-Paristech, presents distributed OFS using Brillouin scattering for temperature and strain measurement, specifically for civil engineering application. With lab expermiments as well as field applications, it concludes on the ablilty to separate temperature and strain with a signle fiber. It also highlights caracteristic limits and difficulties linked to the host material of the sensor.