The reconstruction of sections on Main Road 118 from Rosh Pinah to Oranjemund.

The project involves the reconstruction of three sections (A to C) of Main Road 118, from Rosh Pinah to Oranjemund.

The project comprises the following main works:

• The project consists of three sections, A to C, where bitumen surface standards will be removed, stockpiled, and reconstructed. Sections A and B are located between the Orange River and part of the Magalies mountain range, after the Sendelingsdrift mine.

• Section C was constructed with high fills, where the road level was increased by approximately 7 meters with an 8% superelevation.

• Sections A and B will involve specialized contractors to implement stability measures as per the geotechnical design, primarily on subsoil materials. The subsoil is part of the existing gravel road built by the mines, connecting Oranjemund to Rosh Pinah. The road level was adjusted each time flooding occurred.

• Section C will involve remediating the embankment by removing and stockpiling pavement layers and high rockfill materials. The underlying cut slope will be benched to a 1:2 ratio, and stockpiled rockfill and pavement layers will be reconstructed as originally built.

• Existing cross-drainage structures will be removed, stacked, and reconstructed to standards along the sections. No culvert will be constructed in the vicinity of Section C.

• The geometric design for Sections B to C will follow as-built plans, while Section A’s geometric design will be modified by raising the vertical alignment by 1500mm along the flood-prone area.

• All sections will be benched both longitudinally and transversely to ensure stability.

• The buffer zone next to the mountain range will only accommodate traffic after stabilizing the rockface and removing loose material.