The Government of Kenya is accelerating major infrastructure investments in the coastal region, with the expansion of the Mombasa–Mariakani Highway emerging as one of the most significant ongoing transport upgrades. Implemented by the Kenya National Highways Authority, the project focuses on modernizing the A8 corridor by transforming the Mombasa–Kwa Jomvu–Mariakani stretch into a high-capacity dual carriageway designed to support both urban mobility and international trade.
The highway plays a strategic role in easing congestion within Mombasa, a city that serves as Kenya’s primary maritime gateway. Heavy traffic, especially long-distance cargo trucks, has historically slowed movement along this corridor, affecting productivity and increasing transport costs. By expanding the road into multiple lanes, the government aims to significantly reduce travel time while improving safety and reliability for commuters and freight operators.
A key objective of the project is to enhance connectivity to the Port of Mombasa, East Africa’s busiest seaport and a crucial entry point for imports and exports serving Kenya and neighbouring countries. Faster cargo evacuation from the port will help streamline logistics, cut delays, and strengthen Kenya’s competitiveness as a regional trade hub within the Northern Corridor network.
Construction works under the project are comprehensive, extending beyond road widening to include modern bridges, pedestrian footpaths, drainage channels, and advanced road safety features. These additions are designed to improve resilience against flooding, enhance pedestrian protection, and ensure the highway meets modern engineering standards suitable for sustained heavy commercial use.
Implementation has been structured into two main sections to ensure efficiency. Lot 1, covering the 11.4-kilometre Mombasa–Kwa Jomvu segment, has largely been completed and upgraded into a four- to six-lane highway. This section already demonstrates the project’s impact by improving traffic flow near industrial zones and residential areas that previously experienced persistent congestion.
Lot 2 stretches 30.4 kilometres from Kwa Jomvu to Mariakani and is being developed as a durable dual carriageway engineered to handle high traffic volumes, including thousands of heavy trailers transporting cargo inland. Once completed, this section will further ease bottlenecks on the outskirts of the city and improve long-distance connectivity to key economic zones across the country.
The project has also benefited from coordinated support by the State Department for Internal Security and National Administration, which has helped manage traffic flow during construction. Through stakeholder engagement with communities, transport operators, and local businesses, authorities are ensuring orderly movement along the corridor while minimizing disruption to daily economic activities.
Overall, the Mombasa–Mariakani Highway upgrade represents a critical investment in Kenya’s transport infrastructure. By decongesting urban roads, improving access to the port, and strengthening the regional logistics chain, the project is expected to boost trade, attract investment, and support long-term economic growth not only in the Coast region but across Kenya and the wider East African hinterland.
