About Us
More than 55 years of successful partnerships delivering critical projects around the world
Infrastructure plays a critical role in economies and communities across the globe. At IRIDIUM we are international leaders in the development, financing, and long-term operations and maintenance of infrastructure projects. We have developed more than 150 projects internationally, totaling over €52 billion of capital value, and generated equity investments of more than €2.2 billion.
As leaders in the industry, we are proud of our track record in project delivery – we are equally proud of what we have accomplished, side-by-side with our clients and local partners. We deliver infrastructure with a focus on sustainability, inclusivity, environmental stewardship, and safety.
Our expertise, from having developed some of the world’s most complex infrastructure projects and concessions/public-private partnerships (P3s), coupled with our commitment to innovation, sustainability, and good governance, allows us to ensure a best-in-class approach to future challenges.
Technical Excellence
- Best-for-project technical solutions & technologies
- Highly specialized & diversified skillsets
- Commitment to innovation & sustainability
Management Excellence
- Active management to optimize value to stakeholders
- Focus on talent sourcing & retaining
- Governance & integrity
Financial Excellence
- Rigorous investment criteria
- Competitively sourced debt & capital
- Innovative & project-specific financial structures
ACS Group
ACS Group is a global leader in the development, construction, and management of infrastructure and related services
Headquartered in Madrid, Spain, and with operations and offices staffed by nearly 129,000 employees worldwide, ACS Group had annual revenues of €35.7 billion, and an EBITDA of €1.9 billion in 2022.
ACS Group carries out its activity in three main business areas: construction, concessions, and services. This is done through an extensive network of specialized companies managed independently, fostering innovation and accountability, that follow shared guidelines, values, and culture.

IRIDIUM as Part of ACS Group
The long-term concession and operations and maintenance subsidiary of ACS Group
Greenfield P3s, alternative finance projects, and concessions developed by IRIDIUM provide a unique opportunity for ACS Group’s diversified collection of companies to get involved through the entire value chain of infrastructure – from its development and financing, through design and construction, and, ultimately, commissioning, maintenance, and operations.
Partnering is not limited to its affiliate companies. IRIDIUM has a proven track record in building enduring partnerships with third-party contractors, service providers, and technology suppliers around the world.
*IRIDIUM operates in North America through

Abertis & Other Concession Companies within ACS Group
In 2018, the acquisition of an approximately 50% stake in Abertis, further strengthened ACS Group’s position in the concessions market, and its commitment to the entire value chain of the infrastructure business. Abertis is a global leader in toll road management, operating 8,000 km of roads in 15 countries.
Pacific Partnerships, a subsidiary of CIMIC, and HOCHTIEF PPP are also companies within ACS Group that participate in greenfield concession projects.

To create value in the delivery of infrastructure assets through a whole life-cycle approach, sound risk management, and a focus on safety, innovation, and sustainability.

Be a leader in a rapidly changing and technologically evolving industry that delivers best-in-class infrastructure focused on customer experience and connecting communities, wherein private initiative and capital play a fundamental role.

Integrity/Excellence
Accountability
Innovation
Delivery
Sustainability
Leadership Team
Like any highly effective organization, IRIDIUM’s success is built on the commitment, expertise, and skills of its people. IRIDIUM’s leaders are enthusiastic, innovative, and deeply involved in the day-to-day work and the mentoring of their teams
Awards & Recognitions
Over 100 industry awards in 15 years – a testamtent to our commitment to excellence
Our growing success and leading market position has been acknowledged by various worldwide infrastructure and P3 industry organizations and publications. IRIDIUM is recognized for excellence in our financial transactions, developer accomplishments, and project-specific merits, including operations and maintenance, social responsibility, and innovation.
Excellence in Concrete Constructions 2022
ACI
N25 New Ross Bypass
Bridge or Other Infrastructure 2021
IABSE
N25 New Ross Bypass
Best Road Project, Silver Award 2017
Latin Finance Magazine
N25 New Ross Bypass
European Project Bond Award 2016
IJ Global
N25 New Ross Bypass
Best Project Finance Deal 2016
Latin Finance Magazine
Lima Metro Line 2 (Peru)
Deal of the Year for Latin American Mutli-Source Financing 2016
IJGlobal Awards
Lima Metro Line 2
Global Team Award - Focus on Latin America 2016
Gold Awards by Iberian Lawyer
Iridium Concesiones´ Legal Department
Best Local Currency Financing 2016
Latin Finance Magazine
Autopista Conexión Pacífico 1 (Colombia)
European Road Deal of the Year 2015
IJGlobal Magazine
M11 Gorey-Eniscorthy
Debt Award for Excelence – European Transport Deal of the Year 2015
Infrastructure Magazine
M11 Gorey-Eniscorthy
Americas P3 of the Year 2015
Project Finance Magazine
Lima Metro Line 2
Americas Deal of the Year 2015
Project Finance Magazine
Lima Metro Line 2
Best Latin American Airport Terminal 2003
Eurotest
Serrano Park
Best Project Financing 2013
11th Latin American Forum on Infrastructure Leadership
Lima Metro Line 2 (Peru)
Best Project Engineering 2013
11th Latin American Forum on Infrastructure Leadership
Lima Metro Line 2 (Peru)
Best Civil Engineering 2012
College of Civil Engineers
Serrano Park
Civil Works Category 2011
Scientific Structural Concrete Association
Waterford Bridge (Ireland)
Environmental Award 2011
Environmental and Regional Planning Council of the Community of Madrid, the Official Madrid Chamber of Commerce and Industry, CEIM, and the Madrid Business Confederation (CEOE), with support from the Foundation for Environmental Development and Research (FIDA)
Iridium
Q de plata (Silver Q) for Management Excellence 2011
Basque Foundation for Excellence
Bidelan (Spain)
Deal of the Year 2009
African Bankers Magazine
Platinum Toll Road (South Africa)
Best Latin American Airport Terminal 2007
Latin Trade Magazine
Santiago Airport
Premio Rolim Amaro 2007
Latin American Airline Association
Santiago Airport
Project Finance Deal of the Year - Transport Infrastructure category 2005
Euromoney Magazine
TP Ferro (Spain/France)
EMEA Transport/Rail Deal of the Year 2005
Project Finance Magazine
TP Ferro (Spain/France)
Best Latin American Airport Terminal 2005
Latin Trade Magazine
Santiago Airport
Premio Rolim Amaro 2005
Latin American Airline Association
Santiago Airport
Caribbean's Leading Airport of the Year 2005
World Travel Awards
Jamaica Airport
EMEA PPP Deal of the Year 2005
Project Finance Magazine
Calle 30 (Madrid, Spain)
Best Project Finance Deal 2004
Latin Finance Magazine
Vespucio Norte Express
Best Latin American Airport Terminal 2003
Federal Highway Administration of the US Department of Transportation
Santiago Airport
Excellence in Concrete Constructions 2022
ACI
N25 New Ross Bypass
Bridge or Other Infrastructure 2021
IABSE
N25 New Ross Bypass
Best Road Project, Silver Award 2017
Latin Finance Magazine
N25 New Ross Bypass
European Project Bond Award 2016
IJ Global
N25 New Ross Bypass
Best Project Finance Deal 2016
Latin Finance Magazine
Lima Metro Line 2 (Peru)
Deal of the Year for Latin American Mutli-Source Financing 2016
IJGlobal Awards
Lima Metro Line 2
Global Team Award - Focus on Latin America 2016
Gold Awards by Iberian Lawyer
Iridium Concesiones´ Legal Department
Best Local Currency Financing 2016
Latin Finance Magazine
Autopista Conexión Pacífico 1 (Colombia)
European Road Deal of the Year 2015
IJGlobal Magazine
M11 Gorey-Eniscorthy
Debt Award for Excelence – European Transport Deal of the Year 2015
Infrastructure Magazine
M11 Gorey-Eniscorthy
Americas P3 of the Year 2015
Project Finance Magazine
Lima Metro Line 2
Americas Deal of the Year 2015
Project Finance Magazine
Lima Metro Line 2
Best Latin American Airport Terminal 2003
Eurotest
Serrano Park
Best Project Financing 2013
11th Latin American Forum on Infrastructure Leadership
Lima Metro Line 2 (Peru)
Best Project Engineering 2013
11th Latin American Forum on Infrastructure Leadership
Lima Metro Line 2 (Peru)
Best Civil Engineering 2012
College of Civil Engineers
Serrano Park
Civil Works Category 2011
Scientific Structural Concrete Association
Waterford Bridge (Ireland)
Environmental Award 2011
Environmental and Regional Planning Council of the Community of Madrid, the Official Madrid Chamber of Commerce and Industry, CEIM, and the Madrid Business Confederation (CEOE), with support from the Foundation for Environmental Development and Research (FIDA)
Iridium
Q de plata (Silver Q) for Management Excellence 2011
Basque Foundation for Excellence
Bidelan (Spain)
Deal of the Year 2009
African Bankers Magazine
Platinum Toll Road (South Africa)
Best Latin American Airport Terminal 2007
Latin Trade Magazine
Santiago Airport
Premio Rolim Amaro 2007
Latin American Airline Association
Santiago Airport
Project Finance Deal of the Year - Transport Infrastructure category 2005
Euromoney Magazine
TP Ferro (Spain/France)
EMEA Transport/Rail Deal of the Year 2005
Project Finance Magazine
TP Ferro (Spain/France)
Best Latin American Airport Terminal 2005
Latin Trade Magazine
Santiago Airport
Premio Rolim Amaro 2005
Latin American Airline Association
Santiago Airport
Caribbean's Leading Airport of the Year 2005
World Travel Awards
Jamaica Airport
EMEA PPP Deal of the Year 2005
Project Finance Magazine
Calle 30 (Madrid, Spain)
Best Project Finance Deal 2004
Latin Finance Magazine
Vespucio Norte Express
Best Latin American Airport Terminal 2003
Federal Highway Administration of the US Department of Transportation
Santiago Airport