[1] This road starts in Gitaru, in near the town of Kikuyu, approximately 24 kilometres (15 mi), north-west of the central business district of Nairobi.
[2] The road travels in a general north-easterly direction through Wangige, Kihara, Ndenderu, Rumingi, to end at Ruaka, a total distance of about 16.5 kilometres (10 mi).
[1] The Western Bypass development also involves the construction of 17.7 kilometres (11 mi) of service roads and walkways measuring 2 metres (6 ft 7 in) on both sides of the highway.
A total of six interchanges and overpasses will be built, one each in the six townships where the four-lane dual carriageway is planned to pass.
[1] In February 2019, China Road and Bridge Corporation, the selected contractor, began construction of this highway.