Geoquest USA, Inc. 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 Geoquest group. 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.