The 39-km bypass starts on the Ruiru-Kiambu road. It crosses the Northern bypass and the Ruiru railway line into Thika road. After crossing Thika Road, it crosses Kamiti, Gathara-ini and Nairobi rivers into Ruai. The corridor then crosses Kangundo Road and proceeds to Mombasa Road via Embakasi Garrison and the North Airport Road.
The Eastern Bypass together with the Northern Bypass will cost Sh8.5 billion. The government of Kenya is financing 15 per cent of the project (Sh1.2 billion) while the Chinese government is financing the remaining 85 per cent (Sh7.3 billion).
The project, scheduled for completion in three years, includes construction of flyovers, interchanges, standard pipe culverts and box culverts.