The project is needed as the existing road has just one lane in either direction and suffers badly from congestion. The road carries a high percentage of heavy trucks travelling to and from the port of Mombasa and the route also has a poor reputation for safety due to a large number of dangerous overtakes. In April of this year alone there were two separate head-on collisions within the space of a few days, resulting in the loss of 27 lives in one crash and eight in the other.
The upgraded route will provide an important link through to Uganda as well as Rwanda and Burundi when it is complete. These landlocked countries will benefit economically from a dual carriageway connection to the port of Mombasa.