The Kenya National Highways Authority (KeNHA) has received two Public Private Partnership Proposals (PPP) for the construction of the Nairobi-Mau Summit dual road. 

One of the PPP proposals submitted to the KeNHA was from a consortium comprising the National Social Security Fund (NSSF) and China Road & Bridge Corporation (CRBC). The national pension fund plans to invest 50% of the project's capital, amounting to between KSh 20 billion (US$ 154 million) and KSh 25 billion (US$ 192 million), while CRBC is expected to contribute the remaining half. The 175-km Nairobi–Mau Summit dual carriageway, beginning at Rironi in Limuru, is projected to begin construction in June 2025. The total project cost is estimated at KSh 170 billion (US$ 1.3 billion), with KSh 120 billion (US$ 923 million) to be financed through debt.

The proposed road project aims to reduce traffic congestion and boost trade and travel between Kenya and its western neighbors. It will involve upgrading a 175-km section linking Nairobi to Mau Summit—an essential part of the Northern Corridor, which serves as a major route connecting Kenya with Uganda and other East African nations. The NSSF oversees an investment portfolio valued at Ksh 477 billion (US$ 3.7 billion).