What Soletanche Bachy does

Soletanche Bachy is a French-headquartered geotechnical engineering and foundation construction specialist founded in 1928, operating as the primary foundation brand of the Soletanche Freyssinet group (itself part of VINCI Construction). The company designs and executes deep foundations, retaining structures, cut-off walls, tunnels, ground improvement, and maritime foundation works for large-scale infrastructure projects. Its technology portfolio spans proprietary processes including diaphragm walls (Paroi Moulée), jet grouting, deep soil mixing, CFA piles, ground anchors, Trenchmix, STARSOL piling, Biocalcis biocementation, and the Exegy low-carbon concrete and grout solution. Operations are delivered through approximately 80 subsidiaries and branches across nearly 60 countries, including Bachy Soletanche (UK), Brady Marine & Civil (Australia), Soletanche Polska, Rodio Swissboring, Foundation Alliance, Nicholson, Roger Bullivant, Balineau, BESSAC, and others.

Soletanche Bachy generates revenue by securing contracts as either general contractor or specialist subcontractor through competitive tendering with utilities, government agencies, and private developers. Project scope spans data centers (e.g., Digital Realty MRS5 in Marseille), water utilities (e.g., United Utilities AMP8 reservoir framework in the UK), port and maritime infrastructure (e.g., Cairns Port Authority barge ramp), and urban infrastructure (e.g., Corredor Verde in Guatemala). Individual contract values disclosed publicly range from £5,000 to £6 million under the United Utilities framework, while larger multi-project engagements extend over multi-year asset management periods. Customers include Digital Realty, United Utilities, and Cairns Port Authority across enterprise and government segments.

The company serves vertical use cases including buildings and housing, port infrastructure, dams and water storage, water and sewage, tunnels, railway structures, car parks, and data centers. Specialized expertise products such as ForShore (maritime), PREFA (prefabricated foundations), and Exegy (low-carbon concrete) are marketed as differentiated solutions supporting both traditional geotechnical work and increasingly sustainability-driven tenders.

Name

Soletanche Bachy

Legal name

Soletanche Freyssinet

Website

https://soletanche-bachy.com

Company type

Private

Founded year

1928

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Soletanche Bachy is a French-founded (1928) geotechnical specialist delivering deep foundations, retaining structures, tunnels, ground improvement, and maritime foundation works for enterprise and government clients across nearly 60 countries through approximately 80 subsidiaries under VINCI Construction.

Ownership category

akta.pro rank

Product category

Geotechnical Engineering and Foundation Construction Services

NAICS

Heavy and Civil Engineering Construction (237), Other Heavy and Civil Engineering Construction (237990), Site Preparation Contractors (23891), Poured Concrete Foundation and Structure Contractors (23811), Utility System Construction (2371)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Piling & Deep Foundations (Driven, Bored, CFA, Micropiles) (IMAFAOAA)

akta.pro secondary industries

Earth Retention & Excavation Support (Sheet/Soldier Piles, Diaphragm Walls, Bracing) (IMAFAOAD), Tunneling & Underground Geotechnics (Ground Treatment, Support, NATM/SEM Interfaces) (IMAFAOAJ), Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing) (IMAFAJAI), Slope Stabilization & Landslide Mitigation (Soil Nailing, Shotcrete, Reinforced Slopes) (IMAFAOAI), Dewatering & Groundwater Control (Wellpoints, Deep Wells, Cutoff Systems) (IMAFAOAF)

Keywords

• Deep foundation construction
• Geotechnical engineering
• Soil improvement techniques
• Ground engineering works
• Marine foundation solutions

Headquarters

HQ city

Rueil-malmaison

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Geotechnical Construction Services: Revenue generated from providing geotechnical construction services as either general contractor or specialist subcontractor on infrastructure projects including foundations, tunnels, retaining structures, and maritime works. Projects range from £5,000 to £6 million in value based on United Utilities framework contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Soletanche Bachy is a world leader in foundations and soil technologies, providing geotechnical construction services as either general contractor or specialist subcontractor on large-scale infrastructure projects. Core service offerings include deep foundations, diaphragm walls, retaining structures, cut-off walls, tunnel construction, ground improvement, marine foundations, and reinforcement works, delivered through proprietary techniques such as jet grouting, deep soil mixing, CFA piles, and the Exegy low-carbon concrete solution. Projects span buildings and housing, port and maritime infrastructure, dams, water and sewage systems, tunnels, railway structures, car parks, and data centers across nearly 60 countries.

Product overview

Soletanche Bachy is a world leader in foundations and soil technologies, offering a comprehensive portfolio of geotechnical solutions. The company's offerings are organized across techniques (deep foundations, retaining structures, cut-off walls, civil engineering, ground improvement, reinforcing), processes (diaphragm walls, jet grouting, deep soil mixing, CFA piles, ground anchors, Trenchmix, Biocalcis), and specialized expertise products (Exegy for low-carbon concrete, PREFA for prefabricated foundations, ForShore for maritime projects). The Group operates through approximately 80 subsidiaries and branches across nearly 60 countries, providing both general contractor and specialist subcontractor services for turnkey projects with geotechnical focus. The STARSOL process is used for specialized pile installations. Services include equipment, design offices, methods experts, and materials laboratory support.

Differentiator

Problem solved

Functional benefit

Brands

• Exegy by Soletanche Bachy: Low-carbon concrete and grout solution to help reduce environmental footprint of construction projects
• PREFA
• ForShore
• Trenchmix
• STARSOL
• Biocalcis
• Ingenious Podcast

Products and services

• Exegy by Soletanche Bachy Low-carbon concrete and grout solution developed to help clients reduce the environmental footprint of their construction projects. Marketed as an expertise offering under Soletanche Bachy's 'Nos expertises' portfolio, demonstrated on projects such as the Digital Realty MRS5 data center where an innovative low-carbon formula achieved a 50% CO₂ reduction in concrete.
• PREFA Prefabricated foundation element solution designed to accelerate construction by using off-site manufactured foundation components rather than fully cast-in-place techniques.
• ForShore Specialized maritime and port foundation solutions brand offering construction know-how for projects in marine environments, addressing water proximity, corrosion resistance, extreme loads, and tropical conditions (e.g., Great Barrier Reef coast projects featuring 2.1m diameter monopiles).
• Geotechnical Construction Services Full-range geotechnical construction services delivered as general contractor or specialist subcontractor across deep foundations, retaining structures, cut-off walls, tunnels, ground improvement, civil engineering, and reinforcing works. Covers markets including buildings and housing, port and maritime works, dams and water storage, water and sewage, tunnels, railway structures, car parks, and data centers in nearly 60 countries. Backed by in-house design offices, methods experts, equipment fleets, and a materials laboratory.

Quantifiable outcome

• Carbon reduction of 500 tonnes of CO₂ equivalent achieved through monopile innovation (Brady Marine & Civil project)
• +3 more outcomes

Named customers4 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

One partnership is on record.

• Kier Integrated ServicescoreChannel Partner/ Reseller/ Distributor · 29 September 2025Bachy Soletanche and Kier Integrated Services were jointly awarded Lot 2 for specialist ground engineering works on United Utilities' AMP8 reservoir framework (PRO004824), covering Asset Management Periods 8 and 9 (2025-2030 and beyond) for reservoir improvements across North West England. Contracts signed on 29 September 2025 with indicative project values from £5,000 to £6m.

Scale indicators2 records

Recent moves5 records

Expansion highlights6 records

Regional players

• Veidekke ASA: Norwegian construction and civil engineering group with foundation and ground engineering operations concentrated in Scandinavia. Regionally comparable to Soletanche Bachy's Northern European subsidiaries.
• NCC AB: Swedish construction and property development company with civil engineering and infrastructure capabilities including foundation works. Comparable on Nordic infrastructure tenders but with a regional rather than global scope.

Direct peers

• Bauer AG: German-based global specialist foundation contractor with divisions covering piling, diaphragm walls, ground improvement, and drilling. Closely comparable to Soletanche Bachy's core geotechnical construction offering and project delivery model.
• Keller Group plc: UK-listed global ground engineering specialist offering piling, ground improvement, and geotechnical services across infrastructure, commercial, and industrial end markets. Direct peer to Soletanche Bachy in deep foundations and ground improvement.
• Trevi Group: Italian foundation engineering specialist operating in geotechnical construction, ground improvement, and underground works worldwide. Direct competitor on tenders for deep foundations, retaining structures, and tunneling support.
• Roger Bullivant (subsidiary of VINCI): UK piling and foundation specialist and Soletanche Bachy subsidiary, operating as a focused lower-tier peer within the same group. Externally competes in residential and commercial foundations against regional specialists.

Broad incumbents

• Skanska AB: Swedish-headquartered global construction and development group with significant civil engineering and foundation contracting capabilities. Comparable as a competitor on large public infrastructure tenders where geotechnical works are bundled into broader civil scopes.
• Balfour Beatty Ground Engineering: Ground engineering division of Balfour Beatty, a major UK infrastructure group delivering piling and geotechnical works as part of a broader construction portfolio. Comparable to Soletanche Bachy on UK tenders while offering broader contracting capabilities.
• STRABAG SE: Austrian-based European construction group with substantial tunneling, foundation, and civil engineering operations. Overlaps with Soletanche Bachy in tunnels, ground improvement, and heavy civil works across European markets.
• Fugro NV: Dutch-listed geo-data specialist providing site investigation, geotechnical consulting, and offshore foundation services. Overlaps with Soletanche Bachy in marine site characterization and offshore wind foundation work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCnWhof4dRavOkevAbECraag
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• Instagraminstagram.com/soletanche_bachy
• Xx.com/bachysoletanche
• Facebookfacebook.com/BachySoletanche

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries16 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Soletanche Bachy