ARX Sion – Civil Engineering Serving the Region Since 1952
For over 70 years, ARX Sion has been representing excellence in civil engineering throughout the canton of Valais.
Our company has become a leader in the field by combining technical precision, continuous innovation, and in-depth knowledge of the terrain.
With expertise strongly based in the region and enriched by international experience, we develop personalized solutions that respond to the constantly evolving challenges of modern civil engineering.
ARX is expanding its area of expertise to address the increasing impact of natural phenomena. Our skills now include risk mapping, flood protection, and natural and seismic risk assessment. These domains are at the center of our commitment to resilient, sustainable, and safe territorial development.
Key Competences
Infrastructure:
- Design and management of roads, and highway;
- cycle paths, and shared mobility spaces
- Innovative road maintenance techniques
- Expertise in pavement engineering
Railway Engineering :
- Station projects and compliance upgrades
- Railway alignment adjustments
- Platform widening
- Accessibility for persons with reduced mobility
Construction Digitalization:
- BIM modeling, coordination, and management
- BIM for infrastructure and buildings
- Integration of MEP systems or civil works
- Scan-to-BIM, BIM-to-Field
- Municipal GIS
- Geomatics
Hydraulic Engineering:
- River restoration and flood protection
- Water drainage: pipelines, retention, and infiltration
- Hazard mapping
- Emergency planning
Buildings / Structures:
- Feasibility, preliminary design, detailed design
- Concrete, composite (RC–steel/wood), steel, and timber structures
- Earthworks and special works
- Vertical extensions
- Structural assessments
- Seismic engineering
- Energy efficiency
Bridges & Viaducts:
- Restoration and renovation
- New construction
- Steel, concrete, UHPC
Hydraulic Structures:
- Feasibility studies and planning
- Geotechnical and structural design of dikes and sediment basins
- Quality control of construction materials
Tunnels & Underground Works:
- Covered galleries
- Project management
- Hydropower facilities
- Railway tunnels
ARX Sion – Building the Valais to be sustainable and innovative
Personalized engineering solutions shaped by decades of regional experience and global expertise
Key people
André Tercinod
- Head of Office Sion
Thierry Glassey
- Deputy Head of Office
Jacques Fournier
- Senior Civil Engineer
- Member Management
Alberto Comana
- Head of Buildings Section
