Nairobi like every other growing metropolis worldwide faces a myriad of challenges that come with urbanisation. Traffic congestion has been the most common challenge. Rapid population increase and drastic changes in land use patterns, from previous agricultural to residential, has equally created sprawling human settlements, resulting in a demand for increasing road capacity.
It is due to this demand that 10 years ago, a project for constructing an expanded Thika road started. The project responded to the need to increase road capacity and as such supply more roads to suit the established demand. This saw the expansion of Nairobi - Thika Road, from a four lane highway to eight, and in some sections 12 lanes, at a cost of Sh31 billion.