Leighton Asia has a 51% share in the joint venture with China State Construction Engineering (Hong Kong). The contract is expected to generate revenue to Cimic of approximately AU$805m (£470m).
The tunnel is designed to meet traffic demand arising from the anticipated population increase in Tseung Kwan O through the future development of the district.
The scope of works for the project includes the construction of a 2.2km dual two-lane highway tunnel together with associated slip roads, branch tunnels, viaducts and tunnel portal facilities. The works also involve the delivery of two ventilation buildings and an administration building, as well as implementation of all associated building and supporting works.
Work will begin this month and take approximately five years to complete.