The contract, issued by the Public Works Authority of Qatar, is worth approximately €100 million.

The project involves the construction of a 9.5 km water collection tunnel with an excavation diameter of 4.5 m, and the construction of 21 access shaft.

The excavation of the tunnel will be executed using two tunnel boring machines, and is expected to be completed in approximately four years.

The tunnel will be used for the collection of the surface and groundwater in Doha.

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Impregilo is also currently involved in the construction STEP Project in Abu Dhabi. This is a 40 km–long hydraulic tunnel that will transport the city’s wastewater to a treatment plant.