Existing structures

Preserve Your Asset and Maximize their performance

Managing existing structures such as buildings, bridges, tunnels or industrial facilities requires navigating technical constraints, limited budgets, changing regulations, and rising climate risks. As infrastructures age and extreme weather becomes more frequent, the pressure on asset owners increases.

Therefore, ensuring safety, service continuity, and long-term value requires a strong and efficient asset management strategy. This is exactly where Sixense provides support.

Our Dedicated ”Existing Structures” Division

Sixense supports you throughout the full lifecycle of your structures, from the first diagnosis to long-term monitoring. Thanks to this approach, our experts help you:

Understand the real condition of your assets
Monitor their behaviour over time
Improve performance, safety, and durability
Make informed decisions based on reliable data

Additionally, by combining engineering know-how and advanced digital technologies, we deliver clear, actionable and sustainable solutions.

Our core services:

Structural Integrity Assessments:

We carry out complete diagnostic investigations including:

Condition surveys
Structural analyses
Performance evaluations
Non-destructive testing

As a result, you get a precise and objective picture of your structure’s condition, which supports better decision-making.

Repair and Rehabilitation Project Management

We design and supervise repair and rehabilitation strategies to ensure:

Technical excellence
Safety and compliance
Quality control throughout the works

Consequently, your refurbishment projects remain safe, predictable and durable.

Asset Management Support

We develop customized tools to help you reduce risk and optimize long-term value, such as:

Structural monitoring programs
Condition-based maintenance plans
Risk-based decision models
Digital asset management solutions

Thanks to these tools, you can prioritize interventions and reduce operational disruptions.

Why Choosing Sixense?

With advanced monitoring technologies, strong engineering expertise and proven methodologies, Sixense delivers:

Reliable and transparent insights
Data-driven decision support
Long-lasting and compliant structures
Reduced risks and optimised maintenance strategies

Ultimately, your assets remain safer, more durable and fully future ready.

Our specialities:

Structural integrity inspection

Assess the condition of structures to ensure safe operation and extend their service life

Read more Structural integrity inspection

Repair and project management assistance

Design technical solutions suited to the existing structure and control their implementation

Read more Repair and project management assistance

Asset management and consulting

Extending your assets' lifespan by controlling risk and optimising maintenance costs

Read more Asset management and consulting

Structures and materials

Tools and solutions for evaluating structures and condition of materials

Cables, bars and tie rods

Assessment of cable-stayed and prestressed structures

Internal prestressing

Tools and methods for diagnosing prestressed structures using pre- or post-tensioning

External prestressing

Non Destructive Tools tools and innovative solutions for inspecting and monitoring external prestressed cables

Our added value:

A comprehensive approach: by combining multiple areas of expertise, we provide tailor-made solutions to all types of issues
A unique engineering center for existing structures: more than 100 specialists, including engineers, scientists and technicians in Civil Engineering, Asset Management, Structural Modelling, Materials Phatology, Corrosion Science, NDT Inspection and Physical Measurements.
Cutting-edge expertise in special paints and coatings, materials pathology and ageing, and structural behavior and recalculation
Integrated services that give us total control of every link in the chain of expertise: on-site investigations, laboratory analysis and testing, design engineering, etc.

A dedicated team of experts specialising in the engineering of existing structures

Engineering expertise for existing structures helps contracting authorities to manage their infrastructure and built heritage at every stage in the life cycle of engineered structures.

From the time work begins on site to the end of its life, a building or civil engineering structure must be inspected, monitored, maintained and – in most cases – reconfigured and/or upgraded. The design and implementation of these maintenance and refurbishment tasks must be based on special knowledge and expertise.

This type of specialist engineering is essential in responding appropriately to the complex problems involved in assessing the service levels of structures and identifying maintenance tasks to be undertaken and completed.

Against a background of increasingly restrictive budgetary and operating conditions, maintenance scheme optimisation is becoming a necessity for contracting authorities.

Sixense, a key player in the engineering of existing structures

Our experts have been actively involved for many years in the promotion and development of the profession:

We are active members of the IMGC, IDRRIM, CEFRACOR, CEOCOR and CEN 219
We also play a leading role in training the professionals of the future alongside the Ecole des Ponts, CHEC, INSA, Ecole des Mines d’Ales and other leading educational institutions
We regularly publish technical and educational articles in specialist magazines to share the knowledge we have and take part in conferences at international level