Plans on Track for Construction of Nairobi-Mombasa Expressway in Kenya

The project will convert the current two-lane highway to four lanes, expandable to six.

By Chriselle Moraes on
30th August 2022

Korean Overseas Infrastructure & Urban Development Corporation Africa (KIND) has conducted a pre-feasibility study on the upcoming Nairobi-Mombasa Expressway project. The 482-kilometre stretch will link Machakos in Nairobi and Mariakani in Mombasa.

The pre-feasibility study was undertaken by KIND in collaboration with the the Kenya National Highways Authority (KeNHA), and the Ministry of Transport, Infrastructure, Housing, Urban Development and Public Works.  

KIND is also reported to have been awarded the contract to construct the expressway, after the initial contractor, Bechtel Corp, pulled out of the project citing financial limitations.  

The project will be a public-private partnership (PPP) and is estimated to cost US$2.18 billion. It was initially launched in 2016 as part of Kenya’s Vision 2030, and the groundbreaking ceremony took place in 2019. The project includes rehabilitating and creating two additional lanes along the existing double-lane highway, to convert the highway to four lanes which will further be expandable to six.  

The new expressway will allow speeds of up to 120 kilometres per hour and have a toll system with 19 interchanges. The current highway has 29 bridges with box and concrete pipe culverts.   

The planned dual carriageway will have three sections. The longest stretch of 174 kilometres will run from Nairobi’s Jomo Kenyatta International Airport (JKIA) to Kibwezi in Makueni. The second will be 132 kilometres from Kibwezi and Voi, while the third will be 160 kilometres and run between Voi and Mombasa.  

The project is further subdivided into ten sections - Mombasa-Mariakani, Mariakani-Maji ya Chumvi, Maji ya Chumvi-Bachuma Gate, Bachuma Gate-Mtito Andei, Mtito Andei-Sultan Hamud, Sultan Hamud-Machakos T/off, Machakos T/off-Athi River, and Athi River-JKIA.  

The upgraded Nairobi-Mombasa toll road will help reduce travel time from ten hours to four. It will also help reduce logistics costs, increase awareness of road safety, and will boost the growth and economic development along the Nairobi-Mombasa corridor by enhancing transport infrastructure. 

Top Photo: Mombasa-Nairobi highway under construction (Zacharia Maganga Nyambu | Wikimedia Commons)

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