The Franco-Swiss town of Saint-Gingolph has a main road running through it (known as the RD1005 in France). The increase in traffic, the limited size of the Saint-Gingolph crossing and the presence of customs controls have led the local authorities (Haute-Savoie in France and Valais in Switzerland) to plan an alternative route.
The project involves crossing a disused railway line, a main road and the Morge stream (right bank border).
The Project
Challenges
Project owner
Haute-Savoie departmental authority (France)
Period
2009 – 2014
Key figures
A 1.5 km deviation, coordinated with the Swiss authorities
13 crossings
Steeply sloping woodland
Challenge
This cross-border deviation project involves a covered section on the Swiss side and requires close cooperation between French and Swiss authorities (for data gathering, regulation, processes, scheduling, etc.)
The Assignment
The preliminary design proposed by setec, in line with the French authority’s specifications included:
- analyzing the environment and drawing up a map of environmental constraints,
- defining the possible routes (within the limits set by local planning rules),
- conducting a comparative analysis (technical, financial, functional, etc.) of these routes.
After this preliminary design work, setec produced consultation documents to present to local authorities, associations and residents concerned by the project. The objective was to present the research carried out and discuss the proposed options.
Preliminary design was then carried out to define the construction work and validate costs. This included all the technical aspects and the expropriations required by the deviation.
Based on the preliminary design and compiled documents, setec then handled a number of administrative procedures:
- impact study, public interest declaration and water regulation documentation,
- expropriation procedures.