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Engineering resilient, efficient and connected national rail corridors
Rail mainline systems are at the core of national and regional transportation networks, linking urban centers, logistics hubs and industrial areas. At Sener, we provide end-to-end engineering services for the design, upgrade and management of conventional rail networks — both passenger and freight. With over three decades of experience and involvement in the development of more than 10,000 km of track, we support the modernization and expansion of rail infrastructure with an emphasis on safety, interoperability and sustainability.
We have contributed to major rail development programs in Europe, the US, Latin America, Oceania and Asia, offering specialized solutions for line layout, signaling, electrification, tunnel and bridge engineering and station design. Our teams also support integration with logistics terminals, ports and multimodal hubs.
How we support mainline rail networks
We deliver comprehensive solutions covering the entire corridor: from track and layout design, civil structures and electrification to stations, signaling and rolling stock interfaces.
Our multidisciplinary teams cover every area of rail mainline engineering — from feasibility studies and preliminary design to execution and commissioning. We offer a comprehensive view that includes operations simulation, asset lifecycle planning and RAMS methodologies. Our ability to integrate systems, disciplines and stakeholders ensures technical consistency and long-term performance.
We manage the complexity of mixed-use lines and high-density corridors, ensuring coordination between civil infrastructure, electromechanical systems and operations. Our work helps rail managers and public authorities achieve capacity, safety and energy goals while minimizing lifecycle costs.
Our projects integrate feasibility studies, track alignment, viaducts, tunnels, bridges, electrification, signaling and communication systems. We also deliver stations and interchanges, universal accessibility features, and digital tools such as BIM and digital twins. This breadth of experience positions us as a global partner for resilient, efficient and connected national rail corridors.
We tailor each project to its functional and economic context. Our methodology spans all project phases: from planning and traffic forecasting to detailed design, construction management, certification and assistance to operation. Our designs are guided by real-world operations data, energy simulations and predictive maintenance strategies, maximizing return on infrastructure investment.
By integrating all disciplines — from civil works to systems and operations — we help public authorities and rail managers expand capacity and reliability while minimizing lifecycle costs.
We apply smart methodologies that anticipate future operational needs, enabling flexible, scalable rail systems. Our work also includes support in signaling modernization, BIM-based coordination and integration of electrification and communications systems to ensure that each project is technically robust, safe and cost-efficient.
Sener has been involved in the study or design of over 10,000 km of mainline rail infrastructure across Europe, the US, Latin America, Oceania and Asia.
