The Lesotho Highlands Development Authority (LHDA) has completed the construction procurement for the major bridges to be built under phase two of the Lesotho Highlands Water Project (LHWP), awarding a M511.5 million (US$26.7 million) contract to the Concor-Nthane Brothers M&K Bridges Joint Venture in South Africa.
The joint venture consists of primary partners, Concor Construction (South Africa) and Nthane Brothers (Lesotho), along with subcontractors Post Tensioning and Structural Solutions (South Africa) and Bridge Joints and Rehabilitation Contractors (Lesotho). The contract for the Senqu Bridge, the largest among the phase two bridges, with a value of M2 billion (US$104.4 million), was awarded to the WRES Senqu Bridge Joint Venture. The core partners in this venture include Webuild (Italy), Raubex Construction (South Africa), Enza Construction (South Africa), and Sigma Construction (Lesotho), while subcontractors encompass EXR Construction (South Africa), Gleitbau-Geselschaft (Austria), Post Tensioning and Structural Solutions (South Africa), and Freyssinet International et Cie (France).
Regarding the Senqu Bridge project, construction of temporary site facilities is progressing well, and excavations have commenced for the foundations of piers and abutments, necessary to support the 825-m-long and 90-m-high bridge. The Khubelu Bridge is expected to measure approximately 270 meters in length, featuring nine spans of 30 m each and two abutments. The smallest of the three, the Mabunyaneng Bridge, will have a length of approximately 120 m and will include four spans of 30 meters each, along with two abutments. Both of these bridges will have a width of 13.55 m.
Phase two of the LHWP encompasses the construction of the Polihali dam, the 38-kilometer Polihali transfer tunnel, associated infrastructure, and a hydropower plant at Oxbow. The LHWP's objectives include supplying water to South Africa's Gauteng region and using the water delivery system to generate hydroelectricity for Lesotho. This phase will increase the current water supply from 780 million cubic meters annually to over 1,270 million cubic meters annually, and it will also boost electricity generation in Lesotho. To support the implementation of phase 2, the New Development Bank has agreed to provide ZAR3.2 billion (US$171.5 million).