What Could Have Caused the Fatal Mbagathi Footbridge Crash?

The Mbagathi Road crash that claimed the lives of three young professionals in the early hours of Saturday has left many Kenyans searching for answers. The exact cause of the crash has not been established, and police are continuing to reconstruct the events leading up to the collision.

The accident occurred shortly after 1 a.m. near the Riara University junction. The vehicle carrying Allan Mwenda, Erick Ochieng and Evans Kyalo left the carriageway, struck a pedestrian footbridge and caught fire.

Mbagathi Road features a gentle curve at that point, combined with a slight change in elevation. Although the bend can be negotiated safely under normal conditions, every curve requires a vehicle's tyres to generate enough grip to keep it on its intended path. If that grip is reduced or the vehicle is travelling too fast for the conditions, it can begin to drift away from the roadway.

Speed remains one of the factors investigators are likely to examine. Physics shows that the energy carried by a moving vehicle increases with the square of its speed.

This means that relatively small increases in speed can result in significantly greater impact energy during a collision. If a driver loses control while approaching a fixed structure such as a footbridge, there is often little distance available to slow the vehicle before impact.

Another factor sometimes considered in serious crashes is target fixation, a phenomenon where a driver unintentionally steers towards the very object they are trying to avoid. Under stress or when surprised, drivers may focus their attention on a roadside hazard such as a bridge support, pole or barrier instead of looking for a safe path around it.

Road safety experts say maintaining visual focus on the intended escape route, rather than the obstacle itself, can help reduce this risk. There is no evidence that target fixation occurred in the Mbagathi Road crash, but it is one of the human factors sometimes examined when reconstructing collisions.

Fatigue may also be considered as part of the investigation. The three friends had reportedly spent several hours together over dinner discussing business before heading home. Driving in the early hours of the morning, particularly after a long day, can reduce alertness and slow reaction times. Even a brief lapse in concentration can allow a vehicle to travel a considerable distance without corrective steering.

Mechanical failure cannot be ruled out. Investigators will likely examine the wreckage for evidence of tyre failure, steering problems, brake defects or any other mechanical issue that may have contributed to the vehicle leaving the road.

The intense fire that followed the collision was most likely a consequence of the severe impact rather than its cause. High-energy crashes can rupture fuel lines or damage the fuel tank, allowing petrol to escape and ignite if it comes into contact with hot engine components or damaged electrical systems.

The blaze got so hot that bystanders could only watch.

The pedestrian footbridge sits relatively close to the edge of the roadway. While such structures are designed to improve pedestrian safety, any rigid roadside object becomes extremely dangerous when a vehicle leaves the carriageway at speed because it absorbs very little of the crash energy.

Alcohol consumption has not been confirmed. Police have not released toxicology findings, and it would be premature to speculate while investigations are ongoing.

Jackson Ingolo, who had spent time with the three friends earlier that evening before they went their separate ways, later said they appeared normal and were excitedly discussing their future plans.

Kilimani police continue to investigate the crash. Officers are expected to examine the damaged vehicle, review any available CCTV footage and interview witnesses in an effort to establish exactly what happened.

The tragedy is another reminder that serious road crashes are often the result of a combination of factors rather than a single cause. Whether investigators ultimately identify speed, fatigue, mechanical failure, human error or another contributing factor, every finding will be important in understanding how similar crashes can be prevented in future.

As investigations continue, the focus remains on establishing the facts while remembering the three young lives that were lost far too soon.

Rest in peace, Allan Mwenda, Erick Ochieng and Evans Kyalo. From all of us at Mjengo Hub, we extend our heartfelt condolences to the families, friends and loved ones of the three brothers during this incredibly difficult time.