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.

VSL International
IndustryConstruction
Founded1954
Headquarters,
Switzerland
Areas served
Worldwide
Key people
Jean-Yves Mondon (CEO)
ServicesPost-tensioning
Stay cables
Heavy lifting
Foundations and ground engineering
Civil works (bridges and containment structures)
Buildings
Repairs
OwnerBouygues
Number of employees
4,000
Websitevsl.com