The R15-million reconstruction of Randburg’s Cork Avenue Bridge by the Johannesburg Roads Agency (JRA) has been completed.
JRA is a City of Johannesburg-owned entity responsible for the maintenance, repair and development of roads and stormwater infrastructure, including bridges, culverts, traffic lights and signs.
Cork Avenue Bridge was one of six bridges that were earlier this year identified for reconstruction or major repairs after they were declared unsafe for public use following heavy rainfalls and flash flooding. The others were Belgrave, Joe Nhlanhla, Bridge Road, Spring Road and 432 Modderfontein Road.
More than R103-million was set aside for the reconstruction or repair of all the six affected bridges. There has, as a result of climate change, been an increase in flash floods in urban areas, including Johannesburg, leading to increased water volumes and a negative impact on the aging stormwater infrastructure.
JRA Managing Director Sean Phillips said a site inspection of the Cork Avenue Bridge following the flooding revealed the extent of the damage to the deteriorating structure. This necessitated the demolition and reconstruction of the bridge to ensure public safety.
“The project was embarked upon in early February and has taken six months to complete. The swift action has minimised the inconvenience to residents and road users,” said Phillips.
Phillips said the existing sewerline and other services were severely exposed due to excessive erosion caused by the failure of the stream crossing.
As part of the reconstruction, a three-metre high gabion wall was constructed on either side of the bridge’s stormwater inlet and outlet to support increased water volumes. A 12-metre gabion mattress has also been installed and desiltation carried out. Guardrails and culverts have also been replaced.
“We have also increased vegetation on the banks to address soil erosion. The retaining walls have been reconstructed and the road signs swept away by the stormwater have been replaced,” Phillips said.
He added that by reconstructing the bridge, JRA has improved public safety, accessibility and reliable access for the community.
