Railways
At Colas, we’re convinced that railways are an essential lever in the transition to more sustainable modes of transport.

Accelerating sustainable mobility with high-performance railway infrastructure
Through our specialist subsidiary Colas Rail, we support public and private contractors in the development of efficient, safe, and sustainable railway networks.
From design through to maintenance, we operate as a system integrator on all types of infrastructure: high-speed lines, regional networks, tramways, trolleybus networks, metros, logistics platforms, and industrial facilities, in France and around the world.
We deploy a wide range of technical expertise to meet the diverse needs of railway projects, including those in dense urban areas or complex environments.
Responsible and innovative solutions
Because each site has its own specific constraints, we adapt our methods and tools with three objectives in mind: performance, safety, and sustainability.
Our commitments:
- Reduced carbon footprint of projects (recycled materials, optimized transport)
- Protection of the environment and local residents in urban areas
- The use of BIM and digital modeling for optimized planning
- Deployment of real-time monitoring technologies to guarantee safe, reliable facilities
Are you managing a railway modernization or extension project?
Our teams are here to support you throughout the lifespan of your infrastructure. With Colas and Colas Rail, you benefit from a unique partner, combining sector-specific expertise, a capacity for innovation, and environmental commitment.
