The Kenya National Highways Authority (KeNHA) has issued a public notice on a temporary traffic disruption along a section of the Nairobi Southern Bypass, as part of an infrastructure monitoring project.
In the notice issued on Monday, June 2, 2025, KeNHA advised motorists to expect interruptions as engineers conduct monitoring and evaluation works on the road.
Partial Lane Closure
According to the notice dated Saturday, June 1, 2025, the disruption will affect the section near the entrance of the CRBC Camp, opposite the Nairobi National Park. KeNHA confirmed the closure of the outer single lane—approximately 10 metres long—for sensor installation.
The disruption is scheduled to begin on Saturday, June 7, 2025, at 10:00 p.m. and end on Sunday, June 8, 2025, at 6:00 a.m.. During this time, motorists are advised to approach the area with caution and follow directions from traffic marshals and police officers on site.
The planned works are part of KeNHA’s strategy to improve road safety, traffic efficiency, and pavement monitoring.
Purpose of Sensors
The disruption follows the rollout of stress-strain sensors designed to test the mechanical response of the pavement, measure traffic volumes, and record axle load data. This is expected to aid in forecasting the pavement’s service life, ultimately ensuring safer and more durable road infrastructure.
KeNHA Director General Eng. K. Ndung’u noted that this initiative is part of a broader effort to collect real-time data that will inform long-term road maintenance and planning. The authority says the data gathered will also support compliance with axle load regulations, a crucial factor in reducing road damage caused by overloaded trucks.
Part of Wider Rollout
This development follows KeNHA’s earlier announcement on March 6, 2025, about the rollout of ultramodern weighing sensors across key highways in Western and Nyanza regions. At least 12 new sensors are being installed in areas including Mau Summit, Eldoret, Kapenguria, Malaba, and Ahero.
The sensor technology is part of the automation of weighbridges along the Northern Corridor, which links Mombasa Port to neighboring countries such as Uganda, Rwanda, and South Sudan. The upgrades coincide with growing regional pressure to enforce the Road Overloading Law passed in 2015.
KeNHA has assured the public that these efforts will contribute significantly to preserving road quality and ensuring safer transport systems across the country.
