United States

Lake Mead Tunnel

In 2008, Salini Impregilo, in JV with its United States subsidiary company SA Healy, won the competitive bidding launched by the Southern Nevada Water Authority (SNWA) for the construction of an articulated collection and transport system for the water of Lake Mead, one of the largest man-made lakes in the United States, in order to increase the supply of water for drinking and household use in the Las Vegas metropolitan area. The value of the contract is $511 million.

The percentage of work completion as at June 30, 2015, was 90,2%.

San Francisco Metro

In August 2011, the San Francisco Municipal Transportation Agency awarded a contract to the Salini Impregilo Group (in a grouping with the American company Barnard) for construction of the “Central Subway” metro line extension in the city of San Francisco. The overall value of the contract is $240 million; Salini Impregilo, through its subsidiary SA Healy, has a total stake of 45%. The project involves an underground extension of the current surface line in the city’s downtown area, with construction of two new single-track tunnels having a total length of 5 km, which will be made with two 6.40 m diameter TBMs. The expected duration of the work is 35 months.

The percentage of work completion as at June 30, 2015, was 83.8%.

Anacostia River Tunnel

On May 8, 2013, the Impregilo Group, in partnership with Parsons Corporation, a leading construction company in the United States, won the competitive bidding to design and build a section of the wastewater collection and treatment system of the city of Washington DC. The high-tech project is valued at approximately $254 million (the Group’s overall share is 65%). Salini Impregilo will be the leader of the project, which is expected to be completed in about 4 and a half years after the start of works.

The “Anacostia River Tunnel” project is part of DC Waters’ “Clean Rivers Project.” It calls for the construction of a water tunnel running largely beneath the Anacostia, a tributary of the Potomac River. The tunnel will be about 3.8 km long and 7m in inside diameter; there are also plans for the construction of 6 water uptake wells to a depth of about 30 m. The tunnel will carry wastewater and stormwater separately to prevent river pollution during floods (Combined Sewer Overflows or “CSO”) that occur in periods of heavy rainfall.

The percentage of work completion as at June 30, 2015, was 36.7%.

Gerald Desmond Bridge

In July 2012, Salini Impregilo was awarded the tender called by the Long Beach port authority for the construction of a cable-stayed bridge with the main span of 300 m. and two 150 m high towers. The development of the project will take place in the port of Long Beach. The present value of the contract is $779 million. The foundations for the piles are currently under construction.

The percentage of work completion as at June 30, 2015, was 27%.

Dugway Storage Tunnel

Salini Impregilo, in November 2014, won a tender promoted by the North East Ohio Regional Sewer District to build the 'Dugway Storage Tunnel'. The envisages the excavation of a tunnel, 4.5 km in length and 8m in diameter, the construction of 6 shafts of varying diameters and depths, connections between the tunnel and the shafts and a series of concrete structures for the collection and transporting of wastewater and rainwater. The project is part of a broader plan for the collection, storage and treatment of these waters, with the objective of reducing the level of environmental pollution in Lake Erie. The updated value of the project is worth $153 million.

The percentage of work completion as at June 30, 2015, was 2.8%.