VSL International
VSL International (for Vorspann System Losinger) is a specialist construction company founded in 1954. VSL contributes to engineering, building, repairing, upgrading and preserving transport infrastructure (bridges, tunnels, retained earth walls for roads), buildings and energy production facilities. Based in Switzerland, VSL is owned by French construction company Bouygues.
VSL specialises in post-tensioned concrete, stay-cable systems and heavy lifting, while its subsidiary Intrafor focuses on ground engineering and foundations. The company has also developed its proprietary systems, mostly related to post-tensioning and stay-cable, and has 370 patents.
| Industry | Construction | 
|---|---|
| Founded | 1954 | 
| Headquarters | , Switzerland | 
| Areas served | Worldwide | 
| Key people | Jean-Yves Mondon (CEO) | 
| Services | Post-tensioning Stay cables Heavy lifting Foundations and ground engineering Civil works (bridges and containment structures) Buildings Repairs | 
| Owner | Bouygues | 
| Number of employees | 4,000 | 
| Website | vsl |