Soil nailed wall – Séchilienne bypass

Project

Location: Séchilienne - Isère region of France

Type: Strengthening

Subsidiary: GUINTOLI; NGE GC; NGE FONDATIONS

To increase safety on the RD 1091 road where it crosses through a very active landslide zone between Vizille and Séchilienne, NGE provided its expertise in the form of earthworks, strengthening works, blasting and civil engineering to create a soil nailed wall more than 47 metres high. The 18,000 m2 wall is reinforced with 100 AD/OC walling slabs (300 m2).

The key figures
of the project

47
m high

5
berms

100
AD/OC slabs

All achievements

Locations and subsidiaries

17 countries more than 100 locations 60 subsidiaries

French subsidiaries
Country locations
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NGE – CANADA

90 Adelaide Street West, Suite 600, Toronto, ON, M5H 3V9
Canada

NGE – CANADA is an international and multi-disciplinary subsidiary of NGE.

The entity based in Tonroto is dedicated to business development activities within the country.

NGE – ECUADOR

Av. Fray Vicente Solano
4-101 entre Av. Florencia Astudillo edificio CICA
Piso 1, Oficina 01
010202 CUENCA
Equateur

Tel. : 00 593 7 288 1781

NGE – ECUADOR pulls together all the skills of the NGE Group, and draws on the resources and proven expertise of its subsidiary companies, including those involved with project funding in order to deliver turnkey projects internationally in every area of construction.

NGE – Germany

NGE CONTRACTING GmbH
Am Hardtwald 6-8
76275 Ettlingen
Germany
HRB 107691 Amtsgericht Saarbrücken

Allemagne Visit the website

The NGE subsidiary in Germany was founded in 2021. The company is based in Ettlingen, Baden-Württemberg. Its main clients are fibre optic network operators, municipalities and engineering offices. In Germany, NGE offers project financing, planning, civil engineering and installation of fibre optic networks as well as connection to homes.

NGE – Ivory Coast

Marcory Zone 4C Prolongement rue Paul Langevin 26 BP 564 ABIDJAN 26
Côte d'Ivoire

NGE – Ivory Coast’s team demonstrate their expertise on a daily basis, notably by taking part in major local development projects: construction of dams, water and sewage systems, creation of highways or ring roads, widening works, creation of high-speed rail lines, runways for airports, ports, buildings, etc.

Depending on the needs, NGE can take charge of the project design, including on the most technical sites, or provide an expert look at the work entrusted to it.

In terms of financial engineering, NGE – Ivory Coast has the means and skills necessary to intervene on the projects financed, both for PPPs (Public Private Partnerships) and for concessions. Combining power and experience, NGE – Ivory Coast relies on NGE ressources and expertises to design and implement projects requiring the mobilization of multiple skills in public works.

NGE – Morocco

Oasis square - immeuble N°6
Route N°3 - Quartier de l'Oasis
Casablanca 20410
Maroc

Tel. : +212 5 22 83 91 00

Générale Routière designs, constructs, renovates and maintains all types of works in the civil engineering and public works sectors in Morocco.

Générale Routière responds to all mobility, energy, communication and construction projects and has a comprehensive expertise platform that enables it to conduct all types of projects autonomously.

NGE – Senegal

ROUTE DES ALMADIES
LES ALMADIES
BP 16794 - DAKAR FANN
DAKAR - SENEGAL

Sénégal

Tel. : +221 33 824 67 66

Visit the website

NGE – SENEGAL’s team demonstrate their expertise on a daily basis, notably by taking part in major local development projects: construction of dams, water and sewage systems, creation of highways or ring roads, widening works, creation of high-speed rail lines, runways for airports, ports, buildings, etc.

Depending on the needs, NGE – SENEGAL can take charge of the project design, including on the most technical sites, or provide an expert look at the work entrusted to it.

In terms of financial engineering, NGE – SENEGAL has the means and skills necessary to intervene on the projects financed, both for PPPs (Public Private Partnerships) and for concessions. Combining power and experience, NGE – SENEGAL relies on NGE ressources and expertises to design and implement projects requiring the mobilization of multiple skills in public works.

ROCS

9 rue Sully Prud’Homme
97 420 LE PORT
La Réunion

Tel. : +33 2 62 42 19 94

ROCS: multi-expertise services for public-sector and special projects on the island of La Réunion and throughout the Indian Ocean

ROCS supports public- and private-sector operators with tailormade solutions designed to meet their expectations in terms of efficiency, quality and respect for the environment.

Formed in 1989, ROCS has been acknowledged and respected for its expertise in difficult access, reinforcement and foundation contracting ever since, and incorporated new skills in 2017 following its merger with SGTPS to extend and complement its multi-expertise offering.

As a result, ROCS now offers 5 specialist skills:

Earthworks
Difficult access contracting
Foundation and reinforcement works
Civil Engineering
Dredging and underwater contracting

Beyond La Réunion

The complementary nature of our skills and the special expertise of our teams allow us to respond effectively to all types of geotechnical and infrastructure contracting on the island of La Réunion and the wider Indian Ocean.
Our expertise is recognised and appreciated beyond La Réunion, and has recently won us contracts on Mauritius and the Seychelles.

ROCS is a subsidiary of NGE FONDATIONS, which is part of the NGE Group and France’s leading independent construction and civil engineering contractor.

ROCS therefore has the ability to draw on the expertise, human resources and equipment resources of a substantial, innovative and fast-growing international group of companies.

TCP RAIL

Avenida Domingo Diaz
Entrada a Brisas del Golf
Distrito de San Miguelito
Panama
Panama

Tel. : +507 69 48 12 32

NGE – CANADA

90 Adelaide Street West, Suite 600, Toronto, ON, M5H 3V9
Canada

NGE – CANADA is an international and multi-disciplinary subsidiary of NGE.

The entity based in Tonroto is dedicated to business development activities within the country.

NGE – Germany

NGE CONTRACTING GmbH
Am Hardtwald 6-8
76275 Ettlingen
Germany
HRB 107691 Amtsgericht Saarbrücken

Allemagne Visit the website

NGE – Morocco

Oasis square - immeuble N°6
Route N°3 - Quartier de l'Oasis
Casablanca 20410
Maroc

Tel. : +212 5 22 83 91 00

Générale Routière designs, constructs, renovates and maintains all types of works in the civil engineering and public works sectors in Morocco.

ROCS

9 rue Sully Prud’Homme
97 420 LE PORT
La Réunion

Tel. : +33 2 62 42 19 94

ROCS: multi-expertise services for public-sector and special projects on the island of La Réunion and throughout the Indian Ocean

ROCS supports public- and private-sector operators with tailormade solutions designed to meet their expectations in terms of efficiency, quality and respect for the environment.

As a result, ROCS now offers 5 specialist skills:

Earthworks
Difficult access contracting
Foundation and reinforcement works
Civil Engineering
Dredging and underwater contracting

Beyond La Réunion

ROCS is a subsidiary of NGE FONDATIONS, which is part of the NGE Group and France’s leading independent construction and civil engineering contractor.

ROCS therefore has the ability to draw on the expertise, human resources and equipment resources of a substantial, innovative and fast-growing international group of companies.

NGE – ECUADOR

Av. Fray Vicente Solano
4-101 entre Av. Florencia Astudillo edificio CICA
Piso 1, Oficina 01
010202 CUENCA
Equateur

Tel. : 00 593 7 288 1781

NGE – Ivory Coast

Marcory Zone 4C Prolongement rue Paul Langevin 26 BP 564 ABIDJAN 26
Côte d'Ivoire

Depending on the needs, NGE can take charge of the project design, including on the most technical sites, or provide an expert look at the work entrusted to it.

NGE – Senegal

ROUTE DES ALMADIES
LES ALMADIES
BP 16794 - DAKAR FANN
DAKAR - SENEGAL

Sénégal

Tel. : +221 33 824 67 66

Visit the website

Depending on the needs, NGE – SENEGAL can take charge of the project design, including on the most technical sites, or provide an expert look at the work entrusted to it.

TCP RAIL

Avenida Domingo Diaz
Entrada a Brisas del Golf
Distrito de San Miguelito
Panama
Panama

Tel. : +507 69 48 12 32

Based in the city of BERGERAC, Agence de Bâtiment et Travaux Publics BIARD is a specialist in earthworks and wastewater drainage works.

A SPECIALIST IN ROAD EQUIPMENT, SPORTS GROUNDS AND LANDSCAPING

TAILORED SOLUTIONS

A specialist in road equipment, sports grounds and landscaping, AGILIS offers a comprehensive range of services from the design and completion of works to their maintenance. The expertise of the more than 500 women and men who make up AGILIS’s teams, their know-how and their in-depth regional knowledge make it possible to provide tailored solutions and a comprehensive range of services benefiting clients and their infrastructure, based on a sustainable approach to quality, the environment and society.

ADDED VALUE

Founded in 2002 by its current Chairman, Didier Longeron, AGILIS has become a French leader in the Road sector. With sites dotted throughout France, its engineering offices, its equipment fleet and a technical division responsible for the design stage as well as providing technical and regulatory support. AGILIS makes the difference.

COMMITMENT: OPERATIONAL EXCELLENCE

From large transport infrastructures to local projects, AGILIS secures, coordinates and develops using cutting-edge equipment, while continuing with dedication to maintain over 1000 construction sites per year for public and private customers.

BARAZER is the specialized regional earthworks subsidiary of NGE, a French multi-category building and public works group.

BARAZER, a local player serving its territory, carries out earthworks of all types (from general earthworks to urban Vrds), intended for public and private customers.

Whether it is for urban or road projects, BARAZER approaches each project with the same know-how: its expertise and knowledge of the territory allow it to provide tailor-made solutions to serve the client and his work.

The synergies developed with the NGE Regional Directorates offer BARAZER the opportunity to position itself on more technical projects.

BERENGIER DEPOLLUTION is an expert in the field of pyrotechnic depollution and asbestos removal.

BROUTIN TP is a public works contractor based in the Nord-Pas-de-Calais region of France, and specialises in utilities and external infrastructure installation.

CAZAL offers its know-how to local clients, on a range of construction sites of all sizes, from general earthworks to VRD works, or even works of art. Its dedicated teams and the plurality of its equipment make it an indispensable local player, both on public and private projects.

Attached to TSO since 2014.

A company specializing in the renewal, maintenance or replacement of track fixtures on operating lines and on closed lines.

We provide a comprehensive service for water supply and wastewater drainage networks. We are expert in all the techniques involved in the collection, piping and treatment of wastewater, the replacement and interconnection of water abstraction pipelines and associated hydraulic structures, drinking water treatment, and the installation and fit-out of dry networks, especially those for electricity supply.

We are also well known for our expertise in optical fibre network engineering to facilitate the rollout of FttH (Fibre-to-the-Home) to areas not already served. Bridging the digital divide is a live and substantial social and regional development issue, and we are very proud to be part of the solution. One of our flagship projects in this market is a public initiative network (PIN) for the French departments of Haut and Bas-Rhin; the first of its kind on such a scale, it serves 700 separate communities.
We are involved in the design, construction and operation of two major public initiative networks in France, totalling 1,500,000 connections; a figure that represents 10% of all the PINs included in the French Superfast Broadband Plan.

Attached to TSO since 1976.

Company specializing in the laying and maintenance of railways in France, mainly in the Paris region.

Company for securing railway yards.

Created in 2005 GMS specializes in the manufacture of asphalt asphalt, it operates in the sectors of Savoie, Haute-Savoie and Isère.

GUINTOLI is the historical and main subsidiary of NGE for the VRD activity and earthworks. Thanks to its regional entities (BARAZER TP, BROUTIN TP, MARMIN TP, MULLER TP, TP LYAUDET, and TPRN), it is able to work on construction sites of all sizes, from general earthworks to VRD works.

Drawing on the experience gained over several decades on the major motorway and LGV construction sites, GUINTOLI operates throughout the country as a specialist in land movements.

LACIS provides dedicated electrical installation services for all types of project.

Based in the Aveyron region and stretching all over the south, LAGARRIGUE is a construction company with strong know-how in building, public and industrial works, civil engineering and prefabrication on demand. It also offers expertise in heritage repair and maintenance.

Created in the 1900s by the Le Chêne family and taken over in 1992 by Cardinal Edifice, Le Chêne Constructions enjoys a solid reputation on the Morbihan department and more broadly on the Great West. Proximity, flexibility and efficiency are the main assets of this building company.

Based in Bordeaux, LPF TP is a specialist in the installation of fluid pipeline networks.

This specialist in Earthworks and Urban Infrastructures is based in the Hauts de France region of north-eastern France.

With nearly 20 years of experience, Menuiserie Cardinal offers to professionals and individuals a set of skills in the carpentry trades: study, manufacture and laying, of all carpentry work, wood framing and cladding, exterior joinery (PVC, Aluminium, mixed and wood), and interior joinery for new or renovation projects.

Company specializing in topography, auscultation, 3D scanner, BIM, study and measurement activities, in the development of railway software and in training oriented to topography.

This company is the Earthworks and Urban Infrastructures specialist for the Grand Est region.

WE ARE THE NEW GENERATIONS OF ENTREPRENEURS

We believe in the strength of the team, we thrive with and for our customers, we continually advance and push back our own boundaries, we look to the future with confidence and optimism, we apply our experience with passion and never compromise the standards, we focus our energies for the benefit of all the new generations and we build structures that make the world a better place.

Multi-trades, customer service and their work.

NGE brings together 7 construction trades and offers a comprehensive approach to carrying out the projects entrusted to it. This is the force of multiple exchanges.

NGE BÂTIMENT is a building company covering the three main stages of a project: design, realization and operation. The plurality of its know-how and technical mastery enable it to position itself on national projects.

NGE BÂTIMENT is involved in the construction, maintenance and renovation of works of mass construction, in general enterprise or in the design-realization of all types of buildings: industrial buildings, offices and commercial equipment, housing, public facilities.

Working through NGE Concessions, we step in where the Group’s centres of expertise are required to fund, design, construct, service and maintain infrastructures by setting up Public Private Partnerships in the form of concession contracts, public service outsourcing contracts and partnership agreements. We can act as consortium lead contractors or consortium partners.

NGE CONNECT is a new subsidiary company formed to take care of the design, rollout and maintenance of smart device networks, such as video surveillance, urban transport management, smart lighting and parking systems, and environmental monitoring systems. It is part of the Pipelines & Other Underground Networks business line.

Created out of our acquisition of S2F Network in Le Havre, whose core business is the development of smart device networks, to complement our expertise in optical fibre optics and power supply systems, NGE Connect will allow the Group to position itself in the market for the smart technologies that will be central to regional development going forward.

NGE FONDATIONS – a subsidiary of the NGE Group, which employs 14,000 people – is a contracting company specialising in geotechnical techniques, from soil mechanics to rock mechanics. NGE FONDATIONS provides support for all your foundation, reinforcement and special work projects.

With an operational presence throughout France, we provide our services in rural and urban areas, and in mountain and river environments.
Our organisational structure is designed to give us a regional presence that responds effectively to the needs of private-sector and public-sector customers, from private individuals to major infrastructure management operators. We play an active role in all types of national major project. These include the Grand Paris infrastructure plan, for which our teams are already working on several major projects.

For international projects, NGE FONDATIONS provides the full range of its expertise worldwide through NGE CONTRACTING, another NGE subsidiary company.

NGE FONDATIONS has 30 years of experience and multi-technical expertise: soil improvement, deep foundations, supporting structures, soil injection, reinforcement, difficult access contracting and civil engineering for specific applications.

KEY FIGURES FOR NGE FOUNDATIONS:

780 employees
18 branches throughout France
1 subsidiary: ROCS on the island of La Réunion
An in-house R&D Innovation department
€200 m in annual revenue for 2019
€80 m invested in an in-house plant and equipment fleet

NGE GC, the Group civil engineering subsidiary, works on technically complex projects whose advanced nature requires skills to be applied in synergy: transport infrastructures (road and rail engineered structures), industrial infrastructures (wastewater treatment plants, water reservoirs, hydropower plants, etc.) and functional infrastructures.

NGE GC also has a strong reputation for its underground work on major excavations, and for the repair and safety upgrading of road, rail and water system structures.

NGE GC has a presence in all NGE MULTI-EXPERTISE regions, in the form of Civil Engineering branches and within the Major Projects department.

The real estate development division of NGE is working alongside the territories to support developments in the real estate sector and offer a global response to the service of usage. This division is able to offer global solutions by bringing together the expertise of the Group’s three main businesses in construction, concessions and real estate development.

NGE INFRANET, with the support of EHTP and LACIS, has been created exclusively to pilot projects in the field of fibre optic deployment, and is responsible for the design of the telecom networks and the construction of the necessary infrastructures in air and underground.

The installation, the connection of optical equipment, as well as the maintenance of networks can also be ensured by his care. With her expertise, she is one of the major players contributing to the implementation of the France Tres Haut Débit plan. Its customers are telecom operators and communities.

NGE PAYSAGES, a subsidiary of NGE, offers expertise in landscaping for more pleasant, peaceful environments that respect the living environment. This development responds to environmental concerns and aims to promote the renaturation of urban spaces: soil dewatering, creation of islands of freshness thanks to the reintroduction and maintenance of nature in cities…

Based in the region around Nice, Nicolo is a specialist pipelines contractor.

Company specializing in the laying and maintenance of railway lines and terminal installations.

Attached to TSO since 2006.

Company specialized in laying and maintenance as well as in railway civil engineering works, mainly in the west of France

Pontiggia SAS is an Alsatian public works company created in 1991 by Robert Lichtenberger.
It is above all a story of women and men whose quality and determination have allowed the company to grow steadily and continuously since its inception.

Specializing in trenchless sewer rehabilitation techniques, REHACANA reduces the impact of road works.

Reporting to TSO since June 2014.

Railway safety and expertise company, created in 2011. Its interventions are carried out on the national railway network open and closed to commercial train traffic.

Société des Bitumes Européens (SDBE)

SERFOTEX specializes in quarrying and rock cuttings.

Societé Générale De Liants (SGL)

Attached to TSO since 1992.

Company specializing in the maintenance, repair and reconditioning of motorized railway vehicles. Maintenance of the locomotive fleet.

Road construction specialist SIORAT builds and maintains roads, motorways, airports, multimodal transport hubs, urban road systems, etc. Working in conjunction with fellow NGE subsidiary AGILIS, alternatives such as concrete road surfaces can also be offered.

Société Lorraine de Travaux Publics (SLDTP). SLDTP is a specialist pipelines contractor based in the Grand-Est region of France.

Societé des Liants de L’Estuaire (SLE)

SOC offers turnkey facilities for water treatment and sanitation, with a recognized presence in local authorities, operators, industrialists and developers. Its expertise is focused on the measures in favour of the preservation of the water resource,

Thanks to the complementarity of its businesses: pipelines, hydraulic equipment and rehabilitation, SOC ensures the design, construction, commissioning and maintenance of equipment.

Based in the Puy-de-Dôme region, this company is an earthworks specialist

TPRN is a historical company of the Lille agglomeration created more than 35 years ago. In 2009, she joined the NGE group and has seen its territory expand to include the entire Nord region – Pas de Calais.

Its main activities are: the VRD (earthworks, roads, sanitation and various networks) as well as urban development (paving, paving, small civil works).

But TPRN is mainly men and women whose achievements and know-how are often put forward by our customers. Our ISO 9001 and 18001 certifications, regularly renewed for several years, are the best proof of this.

TSO brings its expertise in railway works for the construction, renewal and maintenance of infrastructure. With its various subsidiaries, it is also involved in the electrification and reworking of catenary lines, topography and the development of railway software, as well as the maintenance and reconstruction of locomotives and locomotives.

Focused on technological innovation, TSO participates in the development and testing of the most modern railway techniques: introduction of concrete ties, rail welding, elastic fasteners, continuous welded track, mechanized track and equipment renewal suites, track without ballast…

In France and internationally, TSO has signed several major projects with high-speed lines as well as conventional network lines.

Attached to TSO since 2000.

Company specialized in the study, construction, installation, overhaul and maintenance of catenary lines in France and abroad.

Creation of TSO Signalisation in January 2018.

New subsidiary specialising in railway signalling activities.

TSO signalling houses the railway signalling activities previously carried out by TSO Catenaries. Railway signalling consists of all technical equipment designed to ensure the correct brand of trains, in complete safety. It is managed from the various points of referral throughout the rail network.