The National Treasury has defended its decision to scrap the original Nairobi–Nakuru–Mau Summit Highway contract, opting for a new toll-based model to improve fiscal sustainability.

• The original deal would have cost the government approximately Ksh23 billion annually, a figure deemed unsustainable.
• Treasury Cabinet Secretary John Mbadi explained the shift away from a model that exposed taxpayers to a projected funding gap of up to Ksh200 billion in 15 years.
• The new Public Private Partnership (PPP) arrangement shifts financial risk to road users, with motorists potentially paying up to Ksh8 per kilometre.