The N4 national highway was the first major infrastructure project completed after the implementation of the Maputo Corridor agreement had begun.
The N4 stretches almost from South Africa's border with Botswana via Pretoria to Maputo in Mozambique and provides a world-class trunk route between the three countries. For importers and exporters alike the N4 is a fast, safe and efficient road to the international ports of Maputo and Matola.
In July 1996 the governments of Mozambique and South Africa signed a framework agreement for the development of the Maputo Corridor, which included an ancillary agreement for the establishment of a toll road between the two countries.
In May 1997, a concession was awarded to Trans Africa Concessions (TRAC) to build and operate a toll road between Witbank in Mpumalanga Province, South Africa and Maputo. Those negotiations reached financial closure seven months later, in December 1997.
In March 1998, TRAC took over control of the N4 national road from the South African National Roads Agency (NRA), with SNA Civil & Structural Engineers (Pty) Ltd being appointed as lead consulting engineers.