VSL is a specialist in post-tensioned and cable-stayed structures, foundations and ground engineering. It thus contributes to the design and construction of transport infrastructure (bridges, tunnels, roads), buildings, and industrial & energy-producing structures, and it maintains, repairs and upgrades all structural systems that guarantee performance, safety and durability. VSL is part of Bouygues Construction group. It has 3,800 employees in 25 countries, mainly located in Asia, Oceania, the Middle East, Europe, Canada and Latin America.