Motorists using the Rironi-Mau Summit Highway will pay different toll charges depending on the section of the road they use after the Kenya National Highways Authority (KeNHA) approved separate tariffs for the two concessioned segments.The latest approval sets the toll for the 94-kilometre Gilgil-Nakuru-Mau Summit section at KSh 8.

50 per kilometre, which is slightly higher than the KSh 8 per kilometre rate already approved for the 81-kilometre Rironi-Gilgil section and the Rironi-Mai Mahiu-Naivasha road.

As a result, motorists travelling the full route from Rironi to Mau Summit are expected to pay approximately KSh 1,448 in toll fees, while those using only the Rironi-Gilgil section will pay about KSh 648.KeNHA has not yet announced whether motorists travelling across both sections will use a single payment system or pay separately to each operator.The project is being delivered through two separate build-operate-transfer concession agreements.

A consortium of China Road and Bridge Corporation (CRBC) and Kenya's National Social Security Fund (NSSF) is responsible for the Rironi-Gilgil and Rironi-Mai Mahiu-Naivasha sections, while Shandong Hi-Speed Road and Bridge International Engineering Co.Ltd.is constructing and will operate the Gilgil-Mau Summit section.Each concession will run for 30 years before the road is handed back to the government.Construction began in November 2025, with President William Ruto directing that the project be completed by June 1, 2027.The highway upgrade, valued at about KSh 171.9 billion, will expand key sections into four-lane and six-lane roads to improve traffic flow and regional connectivity.