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More than 90 years of experience.  Image of the Port of Bilbao from 1912.

OHL is the result of the merger of Obrascon, Huarte and Lain.

Brief History of Obrascon

May 15, 1911

The company is founded in Bilbao as the General Association of Projects and Constructions Obrascón, S.A.


Its first project consists of two docks in the Port of Lisbon. Between 1953 and 1973 it is owned by the Bank of Bilbao, and later on by Altos Hornos de Vizcaya.


Juan-Miguel Villar Mir, together with José Luis García Villalba and other professionals from the sector, acquires the company from its owner at the time.

Since 1991

The company goes public.

Brief History of Huarte


The company is founded in Pamplona by the Huarte and Malumbres families. Led by Félix Huarte, it manages to reach a privileged position in the sector.


Obrascón joins Huarte as an industrial partner.


The merger becomes effective in January. The sixth construction group in the country is born.

Brief History of Lain


Lain Constructors becomes a subsidiary company of the British Group John Laing Construction.


A group of professionals acquire 90% of the company, changing its corporate name to Lain Constructions.


The company goes public.


The company joins Obrascón Huarte in May, thus forming OHL

Consolidation Process

Consolidation process graph