Originally due to open in 2014, the project has faced repeated delays.
The National System Control Centre project is set for completion in 2028.
Redesign of 3 km stretch between Marima and Mitheru markets to cost Sh5 billion.
Talks are underway for China to fund a new highway and rail extension.
IMF warns of rising debt risks due to the airport’s construction costs.
The government will adopt the EPC model for constructing new roads.
Usahihi Expressway Ltd is finalising road designs and feasibility studies.