![]() Operating costs would be decreased as a result of the elimination of sharp curves and steep gradients. The benefits to the SAR would be significant. The scheme would require four tunnels, two with a length of 0.8 kilometres (0.5 miles) each and two more with lengths of 2.4 kilometres (1.5 miles) and 13.5 kilometres (8.4 miles) respectively. Evans, later to become Chief Civil Engineer of the SAR, proposed a new route for the section between De Doorns and Matroosberg that would result in a gradient of 1 in 66 compensated and a minimum curve radius of 800 metres (2,625 feet). This eventually led to the decision to construct a tunnel system to eliminate the Hex River rail pass altogether. ![]()
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