The Kenya Treasury has officially handed the keys to one of the country's most critical infrastructure projects over to a Chinese consortium. On October 9, 2025, the Public-Private Partnership Committee approved a deal worth Sh180 billion to upgrade the congested Nairobi-Nakuru highway. But this isn't the first attempt, nor was the path to signing entirely straight.
The selected team, a partnership between China Road and Bridge Corporation and the National Social Security Fund, will oversee construction under a 30-year concession. Here's the thing: while the original plan covered a massive 233-kilometre stretch, bureaucratic hurdles from Beijing forced a pivot. The project had to be split into two separate sections to satisfy international investment rules.
The Great Infrastructure Pivot
Initially, the vision was a seamless corridor linking Kiambu, Nyandarua, and Nakuru counties. It covered 175 kilometres of the A8 corridor and another 58 kilometres along the A8 South road. Both roads feed heavily into western trade routes. However, negotiations stalled when the scope proved too large for a single bid under current regulations.
Beijing enforces a strict $1 billion investment cap on state-owned enterprises. This rule requires lengthy internal reviews before any major capital moves overseas. Consequently, the PPP Committee approved a restructuring on November 10, 2025. Now, CRBC and NSSF will handle the 139-kilometre segment from Nairobi through Maai Mahiu to Naivasha. The competing bidder, Shandong Hi-Speed Road and Bridge International, will tackle the remaining 94 kilometres up to Mau Summit. It's a classic case of regulatory reality checking ambitious planning.
Tolling Plans and Motorist Costs
For commuters, the big question always comes down to price. Under the new structure, motorists should expect to pay Sh8 per kilometre once the dual-carriageway upgrades are complete. That's a significant relief compared to previous proposals.
John Mbadi, Treasury Cabinet Secretary, noted that the road would significantly improve mobility between Nairobi and western Kenya. The tariff is lower than the Sh10 per kilometre proposed by the rival SDRBI bid. The six toll stations established along the route will fund maintenance and operations, keeping the debt burden off public coffers. The financing structure relies on 75% debt from Chinese lenders, including the Export-Import Bank of China, and 25% equity.
Speaking of equity, the local stake is crucial. The NSSF is contributing approximately 45% of the equity portion for Phase One. This involvement brings Kenyan pension funds directly into the infrastructure sector, though it raises questions about risk management for retirees.
A Familiar Corridor, New Challenges
This isn't the first time the government has tried to fix this bottleneck. Back in 2020, a French consortium led by Vinci signed a deal for roughly Sh190 billion. That agreement dragged on until early 2025 when officials cancelled it.
Government sources argued that toll rates tied to the French contract placed an unreasonable burden on the average commuter. The termination triggered compensation payments to the French firm and reopened the tender for competitors like CRBC. Since December 1984, CRBC has built two ports and numerous roads in Kenya, including the Standard Gauge Railway. They aren't strangers to the landscape here.
The physical improvements are substantial. The Nairobi-Naivasha section gets upgraded to a dual four-lane carriageway. Further west, the Naivasha-Nakuru West stretch expands to a dual six-lane highway designed for heavy truck traffic. A full viaduct will cut through Nakuru town itself to maintain smooth flow past urban bottlenecks.
Timeline and Political Oversight
Momentum is building fast. Following a high-level meeting between President William Ruto and Zhang Bingman of CCCC on Monday, November 18, 2025, the split decision became public. A groundbreaking ceremony is scheduled for Thursday, November 28, 2025.
The Groundbreaking CeremonyNairobi will likely see top officials cutting red tape to mark the start. With completion projected by June 2027 for the CRBC-NSSF section, drivers hoping for faster trips won't wait much longer.
Frequently Asked Questions
Why was the project split into two sections?
The original 233-kilometre scope exceeded Beijing's $1 billion investment cap for state-owned enterprises. To comply with these outbound-investment rules, the PPP Committee restructured the deal on November 10, 2025, assigning different segments to CRBC-NSSF and Shandong Hi-Speed respectively.
How much will drivers pay for tolls?
Motorists are expected to pay Sh8 per kilometre for the CRBC-NSSF constructed sections. This rate is lower than the previously proposed Sh10 per kilometre by the other bidder, aiming to balance affordability with investor returns over the 30-year concession.
What is the NSSF's role in this deal?
The National Social Security Fund provides a significant portion of the project equity, contributing roughly 45% of the Phase One financing. This ensures local ownership participation alongside the foreign contractor.
When will the road be finished?
Construction is scheduled to begin after the November 28 groundbreaking ceremony. The CRBC-NSSF portion covering 175 kilometres is projected for completion by June 2027, offering relief on the western economic corridor.
