n Civil Engineering = Siviele Ingenieurswese - Evolving design and construction of rural national roads in response to community concerns

Volume 23, Issue 10
  • ISSN : 1021-2000



This project is located in the Eastern Cape on National Route 2 Section 18 between Sitebe Komkhulu and Viedgesville (a distance of approximately 25 km) and forms part of the link connecting the cities of Mthatha and East London. The route is also a major link in the transporting of goods and people within the Eastern Cape and therefore plays a very significant economic and social role. The South African National Roads Agency (SANRAL) originally appointed Aurecon to provide professional services relating to the rehabilitation of the existing road. However, initial geometric assessment of the road concluded that much of the existing facility had a design speed of only 60 to 70 km/h, while road users were travelling at much higher speeds. This was of particular concern where these low standards applied to the sight distances over crest-vertical curves. The substandard geometry led to the decision that the reconstruction of the road was required to achieve the desired horizontal and vertical standards instead of the rehabilitation of the existing road as originally envisaged.

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