JG Afrika was appointed by the Bakwena Platinum Corridor Concessionaire to repair the damaged Groot Marico River Bridge on the N1/N4.
A crack in the bridge pier widened after extreme flooding in early January 2017, resulting in the rotation of the pier and the settling of the deck. An assessment showed that failure was as a result of the erosion of the founding material below the old bridge’s spread footings.
The initial design entailed installing piles at the four corners of the failed pier, and a concrete beam with a lip would be cast between the piles to support the pillar. It was decided to rather dowel into the existing pier and to then cast it into the concrete beam when the damaged pier rotated further during the repairs.