The project concerns the ancillary works related to the new Fréjus Motorway Tunnel safety tunnel, specifically designated as the “External Works, Italian Side”.

The Executive Project (Detailed Design) is subdivided into two main categories. The first is the external zone (fascia), which comprises the tunnel portals and the retaining walls (bastions) for ground containment. The second is the internal area, which faces the yard/square at an elevation of +1308.00 meters above sea level (m a.s.l.), defined by the buildings that make up the intervention.