n Civil Engineering = Siviele Ingenieurswese - Rehabilitation of sinkholes on the N14 near Carletonville : geotechnical engineering




This article showcases Aurecon's involvement in the rehabilitation of a section of the N14 north of Carletonville following the occurrence of a number of sinkholes on the road shoulder that resulted in complete road closure. Three sinkholes formed on the road shoulder at some time between late December 2007 and early January 2008. Two sinkholes (each about 10 m in diameter) formed on either side of a box culvert (see Figure 1), and another on the opposite side of the road (about 4 m in diameter). A 15 km section of the road had to be closed and traffic was diverted along existing roads. Sinkhole rehabilitation and upgrade of the closed section of the N14 is being undertaken under Aurecon's supervision at present. At the time of writing, the rehabilitation work described in this article was in its final stages.

The road is currently under the jurisdiction of the Gauteng Department of Roads and Transport, with the South African Roads Agency (SANRAL) acting as implementing agent on the project.


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