NAIROBI, Kenya – The long-delayed Rironi–Mau Summit Highway project is finally set to take off before the end of October 2025, Roads and Transport Cabinet Secretary Davis Chirchir has announced.
Chirchir said the multi-billion-shilling project, which will upgrade the busy Nairobi–Nakuru–Mau Summit corridor, is in its final stages of preparation, with key negotiations nearing completion.
Speaking on Friday, the CS revealed that agreements with project proponents are expected to be signed within the next ten days, paving the way for President William Ruto to commission the project later this month.
“We’ll be negotiating with the proponents, and hopefully within the next 10 days we should be able to sign and get the President to commission or to ground break the Rironi–Mau Summit before the end of this month,” Chirchir said.
The announcement marks a significant step forward for one of Kenya’s most crucial infrastructure projects, which has faced repeated delays.
President Ruto had in June assured Nakuru County leaders that construction would commence in August 2025 after the completion of design and technical reviews.
However, the start was later deferred to October to allow for the finalisation of financial and contractual details.
The Rironi–Mau Summit Highway, part of the Northern Corridor, is a critical link connecting Nairobi to western Kenya and neighbouring countries.
Once completed, it is expected to ease congestion, enhance road safety, and boost trade and travel efficiency across the region.
According to plans shared earlier by President Ruto, the project will feature a four-lane dual carriageway from Rironi to Naivasha, including the Maai Mahiu–Naivasha section, and a six-lane expansion from Naivasha to Nakuru City to accommodate heavy traffic flow.
“We have agreed with the contractors to speed up the project and complete it by 2027. If not, they should have done a substantial portion of it by that time,” Ruto said in June.
Once construction begins, the Rironi–Mau Summit upgrade is expected to transform transport efficiency along one of Kenya’s busiest routes, reducing travel time and supporting economic growth in the Rift Valley and beyond.
