R399 rehabilitation

JG Afrika provided design and construction supervision services for the Western Cape Government’s Department of Transport and Public Works’ rehabilitation and widening of Main Roads 529 and 527 between Piketberg and Velddrif on the West Coast.

Impact-compaction provided a solid and uniform platform, before recycling and cement stabilising the layers to a depth of 250 mm to prevent future tunnelling by the large mole population in the sandy area. A 150 mm-thick crushed stone base layer and a 19 mm thick Cape Seal then placed.

The road features a 9,8 m-wide carriageway, two 3,4 m-wide lanes, two 0,9 m-wide surfaced shoulders and two 0,6 m-wide gravel roundings.