Thanks to the Arianna ® prefab slab track made of prestressed reinforced concrete, WEGH Group can offer technological solutions that are fit for any type of project, i.e. either traditional or high speed lines, bridges and viaducts, natural or artificial tunnels, stations or above-ground installations. It is the ideal solution whenever a tunnel railway line must be accessible by rubber-wheeled rescue vehicles as it reduces the overall weight of the structure and it has extremely low maintenance costs, which makes it more cost-efficient than a traditional ballast system over the entire life cycle of the rail.