Since 1954, natural growth…


The international WSP Group acquires BG Bonnard & Gardel Holding SA.


Opening of a branch in Bordeaux (France).

Entry into the share capital of Cargo Sous Terrain (CST).


Opening of a branch in Porto (Portugal).

Pierre Epars becomes CEO of the BG Group.

Renewal of ISO 9001 (Quality Management Systems) and ISO 14001 (Environmental Management Systems) and OHSAS 18001 (Occupational Health and Safety, future ISO 45001 standard) certificates.

Opening of two agencies in Toulouse (France) and Turin (Italy).
Pierre Kohler takes over the management of BG Ingénieurs Conseils
60th anniversary of the Group: BG gives itself a new visual identity embodying its positioning, values and personality, namely those of an international consulting engineering firm, a leader in the quality of its services, working in close proximity to its clients and innovating in its solutions geared towards sustainable development.
On 01.10.2013, ARP Ingenieure & Berater became a fully integrated part of the BG Group. By incorporating all subsidiaries (ARP, Tonello, FMNi, Beyeler), the aim is to provide customers with the entire existing range of services in each branch of the Group.
On 31.05.2013, FMNi, Tonello and Beyeler, three of the subsidiaries, merged into BG to simplify the legal structure of the company. The Group is now marketed under the single brand “BG”.
Strengthening of activities in France in the energy sector through the integration of ENR Concept, an engineering firm specialising in energy management and renewables, based in Marseille and Montpellier.
ARP André Rotzetter + Partner AG changes its name to ARP Ingenieure & Berater AG.
Expansion in the German-speaking part of Switzerland with the opening of a new branch in Lucerne for ARP Ingenieure & Berater AG, which is already present in Zug/Baar, Zurich and Schwyz.
Renewal of ISO 9001, ISO 14001 and OHSAS 18001 certifications.
Expansion of the Group’s expertise in assisting infrastructure managers with the acquisition of Docalogic SAS in Lyon, an engineering firm specialising in assistance and advice to transport infrastructure operators.
Renewal of ISO 9001, ISO 14001 and OHSAS 18001 certifications.
Expansion in German-speaking Switzerland with the arrival of the Bernese office Beyeler Ingenieure AG and the ARP group André Rotzetter + Partner AG Ingenieure und Planer in Zug/Baar, Zurich and Schwyz.
Strengthening of the Infrastructure & Transport division with the acquisition of the Neuchâtel-based engineering firm FMN ingénieurs, which specialises in civil engineering and electromechanical engineering.
Creation of the transdisciplinary energy division.
The new CEO of BG is Laurent Vulliet.
Continued growth in France with the acquisition of the CanalE office based in Ivry in the Ile-de-France region and specialising in hydraulics and electricity.
Expansion of the Group’s skills with the arrival of the Tonello office in Aix-Les-Bains, specialising in engineering structures.
Development of the integrated management of natural, technical and human risks.
Awarded 3rd prize in the Swiss Venture Club’s competition for the best company in French-speaking Switzerland.
50th anniversary of the BG Group.
ISO 14001 certification obtained.
Opening of an office in Lyon specialising in industrial audits and remediation of polluted sites.
Entry into the 21st century with a new logo and a focus on sustainable development.
BG is managed by Jean-Daniel Marchand.
Group management organisation by business line: Infrastructure & Transport / Water & Environment / Complex Buildings.
ISO 9001 certification obtained.
Michel Bonnard is the new CEO of BG.
Creation of BG Holding.
Opening of an office in Berne.
Development of activities in Morocco, Tunisia and Libya.
Development of environmental activities.
Opening of the shareholding to all employees of the company.
First establishment in France.
Creation of the public limited company.
Start of activities in Algeria.
André Gardel succeeds Daniel Bonnard as head of BG.
Development of the company in the fields of structures, building techniques, tunnels and energy.
Creation of the company “Bonnard & Gardel Ingénieurs-conseils Lausanne”, main activities: hydraulic works and foundations.
BG founded under the direction of Daniel Bonnard.

Passionate for more than six decades

BG Consulting Engineers was founded in 1954 by two professors from the Ecole Polytechnique de Lausanne (EPFL) to provide state-of-the-art engineering consultancy in a world of reconstruction. The founders, Mr Bonnard and Mr Gardel, were both civil and hydraulic engineers.

The group was built on the basis of these activities, particularly in large hydroelectric works. Then, by addressing and anticipating the needs of society, its clients or its architectural partners’, it progressed in the fields of building, energy and the environment. In addition, by maintaining its links with research and schools, BG has constantly expanded its expertise and its workforce to become an international reference over time.

What about the future?

We look to the future with confidence. The BG Group has been active in increasingly topical issues from a very early stage: global warming, urban development, digitalisation. The Group invests in others and in itself. Its history in the Swiss and French markets, as well as its many large-scale projects around the world, put it at the forefront of responding to these societal challenges. We look forward to contributing to the execution of your projects with our multi-trade know-how, our creativity and our ability to work with a multi-disciplinary approach.

More than 60 years of passion