Renovation instead of reconstruction
We extend the lifespan of existing structures by adapting, repairing and reinforcing them.

Renovation of structures
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Renovation instead of reconstruction
We extend the lifespan of existing structures by adapting, repairing and reinforcing them.
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Working on sites in operation
Our teams carry out work in constricted settings, adapting to operational requirements to ensure that there is no interruption to mobility. Through carefully organised works, detailed planning and close cooperation with infrastructure operators, we ensure that operations are carried out safely and with as little disruption to users as possible.
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Assessing the condition of existing structures
Structures change over time – the ageing of materials and increased stress make regular, appropriate and adaptable maintenance essential. By performing detailed assessments, we can determine the solutions best suited to every situation.

Long-term restoration and protection
We restore all types of structures to their original condition, whether that involves concrete repairs, crack treatment, anti-corrosion protection or infrastructure upgrades.

Reinforcing for the long term
We adapt infrastructure to meet current needs: the addition of post-tensioned concrete, composite materials or UHPC (Ultra-High Performance Fibre-Reinforced Concrete) increases overall efficiency and load-bearing capacity.

Adapting structures to new uses
Our projects can involve transforming existing infrastructure to meet current needs through widening, integrating new modes of transport or upgrading to current standards, such as adapting existing structures for trams or soft mobility.
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Working on active sites
Working safely while traffic flows or operations continue is one of our core strengths. This capability ensures the continuity of transport services, even in constricted environments.
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Transport infrastructure such as bridges, viaducts and tunnels faces increasing challenges. Over time, ageing materials and increased stress make it necessary for structures to be adapted.
We approach projects responsibly, with a focus on repairs, reinforcement and upgrades rather than reconstruction. By adopting this method, we extend the lifespan of structures and reduce their environmental impact and costs for project owners.
We offer expert knowledge across all types of renovation techniques: concrete repair, structural reinforcement, additional post-tensioning, equipment replacement and upgrading of safety systems.
We offer project-specific solutions, suited to the technical, environmental and operational requirements of each structure, developed by our in-house design team.
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Infrastructure renovation projects are often carried out on sites that are still in operation, in the heart of transport networks. Whatever the location – urban, port or rail – we ensure that our work does not disrupt traffic.
Our organisation ensures service continuity while keeping operations running safely. We have extensive experience of working on live sites under strict operational constraints, which enables us to manage all interfaces effectively.
The same approach applies to underground structures, where we carry out modernisation, compliance upgrades or extensions without interrupting operations.
Through a combination of technical expertise, innovation (UHPC, composites, specialised methods) and risk management, we are focused on creating infrastructure that is more sustainable, safer and better suited to current and future mobility needs.
