In Dagoretti, the road enters Kiambu County and then turns northwards, to pass through Muguga and end in the town of Kikuyu, in a suburb known as Gitaru.
[3] The total length of the Nairobi Southern Bypass Highway is approximately 29.6 kilometres (18 mi).
[4] This road is intended to relieve traffic congestion in the capital city's central business district, by diverting long-distance traffic from and to the port city to Mombasa, destined for western Kenya and the land-locked countries of Uganda, Rwanda, Burundi, South Sudan and the eastern parts of the Democratic Republic of the Congo.
[5] In a similar effort, other bypass highways have been built on the northern and eastern sides of Nairobi, with the objective of alleviating downtown traffic congestion.
The construction was funded by the government of Kenya together with the Export Import Bank of China, as illustrated in the table below.