The 31-km bypass starts from Ruaka trading centre along Limuru Road, overpasses Banana Road through Runda and Thome estates. It then proceeds to Kahawa West and eventually to Ruiru, through Kamae, where it joins the Eastern bypass.
The Nairobi Northern Bypass together with the Eastern Bypass will cost Sh8.5 billion. Kenya is financing 15 per cent of the project (Sh1.2 billion) while the China is financing the remaining 85 per cent (Sh7.3 billion).
Once complete, the Northern Bypass will be wide enough to accommodate two heavy commercial vehicles going opposite directions.
China has appointed China Road and Bridge Corporation (CRBC) as the contractor for the project.