Raila Odinga Way, previously known as Mbagathi Way, is a 3-kilometer dual carriageway in Nairobi. It begins at Ngong Road near Kenyatta National Hospital and ends at Lang’ata Road (T-Mall). The road stands out in Nairobi’s infrastructure as the only one constructed with concrete, in contrast to the city’s more common asphalt roads. The project was completed in 2007 during the presidency of Mwai Kibaki and has since become an example of the long-term advantages of concrete roads over asphalt.
Durability and Longevity
One of the key benefits of concrete roads is their remarkable durability. Concrete roads can last anywhere from 30 to 50 years with minimal maintenance, whereas asphalt roads typically require resurfacing every 10 to 15 years. Concrete’s strength makes it highly resistant to wear and tear from heavy traffic, making it particularly suitable for busy routes like Raila Odinga Way.
Additionally, concrete doesn’t soften under high temperatures, an important factor in Nairobi’s warm climate. In contrast, asphalt roads can melt or deform in intense heat, causing potholes and cracks. Many of Nairobi’s asphalt roads face this issue, leading to frequent repairs caused by weather-related damage. Raila Odinga Way, however, has remained largely intact with minimal maintenance required.
Maintenance and Cost Considerations
While the initial cost of constructing a concrete road is typically 20% to 50% higher than that of an asphalt road, this upfront expense is offset by the lower long-term maintenance costs. Concrete roads are less prone to damage from fuel spills, heavy loads, and general wear, making them a more economical choice over time. Raila Odinga Way has proven to be cost-effective by remaining in good condition while many asphalt roads in Nairobi deteriorate quickly and require frequent patching.
Sustainability and the Future of Concrete Roads
Concrete is also a more sustainable choice for road construction. It reflects more sunlight than asphalt, which helps reduce urban heat buildup, consequently lowering the demand for air conditioning in nearby buildings. Furthermore, concrete roads use less energy over their lifetime since they require less maintenance and fewer reconstructions than asphalt roads.
The success of Raila Odinga Way has led to growing support for using concrete in more road projects across Kenya. Expanding the use of concrete for major roads in Nairobi could reduce long-term infrastructure costs and improve road quality for motorists.
In conclusion, Raila Odinga Way highlights the durability, cost-effectiveness, and sustainability of concrete roads. Investing in such long-lasting infrastructure benefits both the city and its residents, ensuring a more resilient urban transport network for the future.
