Leonhard Weiss

Leonhard Weiss is a long‑established, family‑owned European construction group originating in Göppingen, Germany, where it was founded in 1900 as a pure railway construction company. Over 125 years it has developed into one of Germany’s major construction enterprises, active across almost all segments of civil and building construction. The core operational areas are road and network construction, rail infrastructure, and engineering and turnkey construction, supported by strategic divisions for technology, resources and holdings, corporate management, and human resources and communications. The group delivers infrastructure construction, civil engineering and structural works, including road and bridge projects, industrial and public buildings, and turnkey facilities, and maintains strong capabilities in project management for complex road and rail schemes. Rail infrastructure and network construction are central to the group’s role in the wider energy and transport value chain. Its services span track construction and maintenance, railway technology, overhead line and high‑voltage transmission line construction, and construction of utility projects for electricity and telecommunications. Subsidiaries such as infra‑tec, invatec, VIA and a dedicated railway undertaking extend this into steel and noise‑protection systems, cable duct systems, traffic safety and rail freight services. Internationally, the group operates through Leonhard Weiss OÜ and related entities in Estonia, Latvia, Lithuania and Finland, as well as branches in Norway, Sweden, the Czech Republic, Poland and Switzerland, focusing on railways, road construction, engineering construction, and electric network construction and maintenance. Examples of its involvement in large infrastructure include joint‑venture highway construction in Germany and power line projects in Estonia, and the company applies digital methods such as Building Information Modeling and internal innovation programmes to planning, execution and asset management.