Mtentu River Bridge

Rendel and Ingerop South Africa have been appointed by a joint venture between Aveng and Strabag (A.S. Joint Venture) to provide independent checking of special temporary works on the construction of the Mtentu River Bridge on the N2 Wild Coast Toll Road in the Eastern Cape province, South Africa.

Mtentu Bridge will be one of the highest bridges in the world, with a deck height of approximately 223 metres. It will hold the record in Africa for the massive central span of 260 metres, constructed by the balanced cantilever method. It will be total of 1,132 metres long. The approach viaducts will be constructed by the incremental launching method.

The Mtentu River Gorge is remote from any urban settings and located in a rural area of open indigenous veld. The bridge will be a major construction project with short section of approach roadworks on either side of the bridge, as well as parking area and access roads. Separate contracts will include the construction of main haul roads to connect to the local highway network.

The bridge will consist of two five-metre-deep approach viaduct decks with 66-metre spans and 55-metre abutment spans. From each deck there will be cantilevered pedestrian walkways and the deck will have a dual, two-lane carriageway.