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.
The Reinforced Earth Company USA (RECo USA) is a civil engineering design company and supplier of materials for retaining walls, arches, sound walls, and related structures. We are recognized as the inventor of modern Mechanically Stabilized Earth (MSE) retaining walls, patented under the name Reinforced Earth®.
Operating as a separate entity in the United States since 1971, we are affiliated with the global group Terre Armée.
Our portfolio of engineered solutions has expanded to include several variations of permanent and temporary MSE retaining walls, precast modular retaining walls, arch bridges and tunnels, sound walls, traffic barriers, and other structures designed uniquely for many applications.
In 2018 we proudly added T-WALL®, the proven retaining wall system that has been a staple in the highway and railway construction industries for decades.
We are engineers, manufacturers, construction managers, and team players.
Helical Drilling is a geotechnical design/build contractor focused on providing innovative, efficient and adaptable geotechnical engineering and ground construction solutions to general contractors, owners and engineers throughout the Northeastern United States. Helical is an ENR Top 600 Specialty Contractor specializing in Geopier® Rammed Aggregate Pier® ground improvement, earth retention, grouting, deep foundations and piles, underpinning and additional geotechnical construction solutions.