Mtentu Bridge

With a deck height of approximately 223 metres, Mtentu Bridge will hold the record in Africa for the massive central span of 260 metres, constructed by the balanced cantilever method. Upon completion, it will be one of the highest bridges in the world and have a length of over 1,132 metres. The approach viaducts will be constructed by the incremental launching method (ILM).

Currently under construction, the bridge is a major project, comprising a short section of approach roadworks on either side of the bridge, as well as a parking area and access roads. The bridge is being built on the N2 Wild Coast Toll Road in the Eastern Cape province of South Africa.

Rendel and Ingerop South Africa were appointed by a joint venture between Aveng and Strabag (A.S. Joint Venture) to provide independent checking of special temporary works and erection engineering during construction.

The scope of services included:

• Checking of the permanent works under temporary conditions during construction
• Checking for stage-by-stage deflections and geometry control during construction
• Checking of Special Temporary Work (STW) for the balanced cantilever bridge
• Checking of STW for the ILM bridge
• Checking of temporary towers, supports, fixings and temporary prestressing
• Checking of the design of the temporary suspension bridge