Civil Engineering
With several decades of experience, Colas designs, builds, and rehabilitates civil engineering structures essential for the sustainable development of regions. Bridges, tunnels, reservoirs, special foundations, functional, industrial, and commercial buildings: our teams manage the entire project lifecycle, from design to maintenance.
Thanks to our expertise and a culture of constant innovation, we provide reliable, safe, and sustainable solutions.
Recognized Expertise in Civil Engineering and Complex Infrastructure
Our engineers, technicians, and site managers work on large-scale projects, encompassing design, execution, and major rehabilitation. Colas supports public and private project owners on diverse and demanding infrastructure sites.
Bridges, viaducts, tunnels, and special foundations
Colas designs and constructs major civil engineering structures: bridges, viaducts, tunnels, special foundations, and retaining structures.
Our teams also master work in railway environments, including the construction and renovation of railway bridges, culverts, platforms, and underground station passages.
They carry out major rehabilitation and replacement of structures through “punch operation” methods, minimizing traffic interruptions and disturbances for users.
Industrial structures and functional buildings
Colas carries out the construction and major restructuring of industrial and commercial buildings, from the simplest to the most complex.
Our teams work on factories, treatment plants, logistics platforms, hospitals, schools, shopping centers, and parking facilities, maintaining high standards of safety and energy performance.
For functional buildings, Colas designs and implements tailored solutions: accessibility upgrades, installation of rectifier stations, or maintenance workshops for transportation systems.
Expertise serving local communities
As a local player, Colas applies its civil engineering expertise to serve communities, contributing to the development of sustainable, resilient, and accessible infrastructure.
Sanitation and underground works
Colas applies its expertise to water civil engineering and underground structures.
Our teams design and construct sanitation networks, technical galleries, retention structures, pumping stations, and more.
They master all types of traditional shoring, enabling the construction of the most complex infrastructure works: shielded shafts, Berlin walls, traditional galleries, and more.
These projects require advanced skills in water civil engineering, geotechnics, and safety.
Rehabilitation and maintenance of structures
Colas ensures the repair and maintenance of civil engineering structures and infrastructure: structural reinforcement, waterproofing, concrete treatment, major rehabilitation, and replacement of load-bearing elements. These interventions extend the lifespan of assets while ensuring their compliance and safety.
Our teams also work on operational railway structures, ensuring safety, careful planning, and quality execution.
These operations extend the life of infrastructure while maintaining compliance and reliability.
A responsible and innovative civil engineering company
Committed to ecological transition, Colas, through its specialized brand Colas Génie Civil, places innovation and sustainability at the heart of its civil engineering projects. Each site aims to balance technical performance, safety, and reduced environmental impact.
Sustainable solutions and circular economy
Safety, performance, and environmental commitment
Safety is an absolute priority on all our sites. Our teams receive continuous training and enhanced support to ensure safe and exemplary operations.
Colas works to reduce emissions, minimize disturbances, and protect ecosystems, while ensuring the performance and durability of its structures.
Frequently questions
A civil engineering company designs, builds, and maintains the infrastructure that supports daily life: roads, bridges, tunnels, networks, water structures, and technical buildings.
Civil engineering is the backbone of construction, ensuring the stability, safety, and durability of structures.
Design-build, major rehabilitation, punch-operation replacement of structures, retaining structures, repair, water civil engineering, underground works, and industrial and commercial buildings.
Tell us about your project
Do you have a civil engineering project?
Colas offers you technical and personalized support for your civil engineering structures, industrial infrastructure, or sanitation projects.
