The Kenya National Highways Authority (KeNHA) has issued a public notice alerting motorists of temporary traffic disruptions along two major roads — the Nairobi–Nakuru–Mau Summit (A8) Highway and the Nairobi–Maai Mahiu–Naivasha (A8 South) Road — starting Thursday, July 10 to Sunday, July 20, 2025.
According to KeNHA, the disruptions are necessary to facilitate scheduled traffic and transport data collection exercises.
The authority stated that during the period, motorists may be briefly stopped by survey teams to provide information about their journeys.
“The survey will involve Axle Load Surveys, Origin-Destination Interviews, Camera-Based Classified Counts, Cross-Sectional, and Turning Movement counts,” said KeNHA in a statement issued by its Corporate Communication Department.
The traffic studies are part of efforts to improve highway planning and management on Kenya’s busiest transport corridors.
KeNHA has urged all road users to cooperate fully with police officers and traffic marshals who will be stationed along the affected roads.
Motorists using the routes are advised to plan for possible delays and to remain patient as the data collection is critical for future infrastructure development and efficiency on national roads.
President William Ruto directed contractors to commence the construction of the Nakuru-Nairobi highway from July this year.
The announcement was made on Thursday, May 15, by Deputy President Kithure Kindiki, who conveyed the information on behalf of the Head of State during his visit to Nakuru County.
He said the dualling of the Rironi-Mau Summit highway would begin in the next two months to enhance the safety of travellers and facilitate easier and more effective movement of people and goods to and from the Rift Valley, Western, and Nyanza regions.
According to the DP, the President had already instructed Transport Cabinet Secretary Davis Chirchir to oversee the construction works to ensure the timely completion of the Ksh90 billion project
the DP noted that the expansion of the highway would immensely reduce accidents, which have been a prevalent menace along the route.
Ruto’s directive comes a month after he signed a deal with the Chinese government for the expansion of the highway.
This is after it cancelled a similar deal with French contractors for dualling the highway.
Kenya’s decision to end the agreement with the French contractors came after the Kenya National Highways Authority (KeNHA) officials revisited the terms and conditions of the multi-billion project.
