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New Terraces at Croke Park, 1950

Collen Brothers undertook a new building
project at Croke Park for the Gaelic
Athletic Association (GAA) at the beginning
of the 1950s. The company built a new
reinforced concrete development at the
Canal end of the stadium.

Tanker jetty at Aughinish Island

Alumina Contractors Ltd., an international
consortium led by Canadian company,
Alcan, moved to develop a new alumina
plant at Aughinish Island in 1978. The new
development required a deep-water
marine terminal on the island to import
raw materials and export alumina. Collen
joined forces with Christiani & Nielsen, a
UK subsidiary of a Danish civil engineering
company, to undertake the project.
Ringsend pumping station, 1976-85

The most notable and difficult project
undertaken by the company in the late
1970s was an unusually complex civil
engineering job. Collen Brothers won a
contract with Dublin Corporation in 1976 to
construct a new main lift pumping station at
Ringsend. The new station was intended to
meet the sewerage requirements of the
The first requirement at Aughinish was to new Greater Dublin drainage scheme. The
establish the foundations for the new new station received most of the sewerage
jetty; vertical tubular steel piles of two from both new and old urban schemes,
metres in diameter were driven into the deploying a series of pumps to lift 40 million
river bed to support the jetty head. The gallons of waste per day to a height of 50
jetty head was formed off a pre-cast
feet, to allow it to flow by gravity to the
concrete deck, 285 metres long and about new treatment works at Pigeon House. The
40 metres wide. In effect a pre-cast pumping station at Ringsend ranked high
concrete factory was created on the site, among the most elaborate, innovative and
an area of particular expertise for Collen, difficult civil engineering projects
whose engineers had worked with pre- completed by Collen Brothers. It was also
cast concrete since the 1940s. The one of the most prolonged contracts in the
Christiani & Nielsen-Collen partnership firm’s history, surpassing even the long-
worked well and the new marine terminal running Portrane project at the turn of the
became operational in 1982 century.

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