Introduction
Southbound and Northbound traffic on the R21 highway, a critical artery connecting various parts of Gauteng, will face full closures on specific dates and times. These closures, spanning from Nelmapius Drive to Olifantsfontein, are essential for Eskom to carry out vital maintenance work. Here’s everything you need to know about the closures and the necessary diversions.
Dates and Times of Closure
- Saturday, 20th April 2024: Closure from 06:00 to 18:00
- Sunday, 21st April 2024: Closure from 06:00 to 12:00
Reason for Closure
The closures are imperative to facilitate Eskom’s installation of new overhead transmission power lines and a conductor, ensuring uninterrupted power supply to the area. Although inconvenient, these closures are crucial for maintaining a reliable power infrastructure, ensuring the safety of motorists and residents alike.
Previous Incident and Current Closure
Earlier, on April 12, 2024, motorists were alerted to the closure of the R21 due to a damaged powerline mast, which posed a significant hazard. The subsequent low-hanging powerlines prompted authorities to swiftly close off the highway to prevent potential accidents. Now, with the upcoming closures, authorities are proactively addressing these safety concerns, providing a window for Eskom to conduct necessary repairs and upgrades.
⚠️⚠️⚠️⚠️R21 NORTH, AFTER OLIFANTSFONTEIN
— GTP Gauteng Traffic Police (@GTP_Traffstats) April 12, 2024
Power line pylon/ mast damaged, cables hanging dangerously low
Potential close of freeway soon@Eskom_SA @City_Ekurhuleni @TMPDSafety @City_Ekurhuleni @CityTshwane @JoburgMPD @A_RE_YENG @TrafficSA @rezz @Abramjee @Newzroom405 @SABCNews pic.twitter.com/0bBDpOQ3CA
Detour Routes
During the closures, motorists will be redirected via the M57 detour route to minimise disruption. This diversion aims to ensure smooth traffic flow while the R21 undergoes essential maintenance.
Advice for Motorists
For those accustomed to using the R21 during the specified closure periods, it’s advised to plan alternate routes in advance to avoid delays. Motorists traveling from Kempton Park to Pretoria can utilise the Olifantsfontein Road off-ramp towards Midrand. Conversely, those traveling from Pretoria can opt for the Nelmapius Road off-ramp through Irene and Centurion to connect to the N1.

Expectations and Updates
While no specific timeframe has been provided for the reopening of the R21, both Sanral and Eskom are committed to ensuring minimal disruption and timely completion of the maintenance work. Regular updates will be provided to keep motorists informed about the progress and any changes to the closure schedule.
As South Africa continues to invest in its infrastructure and address maintenance needs, occasional closures like these are inevitable. However, through effective communication and proactive measures, authorities strive to mitigate inconvenience and prioritise the safety and well-being of all road users. Stay informed, plan your travels accordingly, and together, let’s ensure smooth transitions during these critical maintenance periods.