The highway has been split into three sections for construction works totaling 50.4 km of multiple lane road.
These sections are Muthaiga Roundabout to Uhuru Highway, Muthaiga Roundabout to Kenyatta University (KU) and KU to Thika.
1. Muthaiga Roundabout – Uhuru Highway
On Muthaiga roundabout–Uhuru Highway section construction works will involve expansion of University Way to eight lanes from six, provision of four lane flyover across Globe Roundabout, expansion of Murang’a Road to six lanes, construction of underpass at Pangani, flyover on Muthaiga roundabout and provision of footpaths.
Works on the Forest Road – Museum Road – Museum Hill roundabout section will involve expansion of Forest Road to six lanes from four lanes, expansion of Museum Hill road to six lanes, provision of forked flyover on Limuru Road and provision of footpaths.
2. Muthaiga Roundabout – Kenyatta University
On the Muthaiga roundabout-KU section, which has been designed as a high-speed superhighway with limited access and exits, works will involve expansion of the carriageway to eight lanes- (Muthaiga – Kasarani) and 6 lanes (Kasarani – KU), construction of underpasses at Kahawa and KU, provision of interchange at GSU roundabout, flyovers at Kasarani and Githurai roundabouts, underpass at former Nakumatt Thika Road, subway at Survey of Kenya and provision of footpaths.
3. Kenyatta University- Thika
Works on the KU-Thika section include expansion of the carriageway to six lanes up to Juja, construction of six lane flyover at Eastern Bypass, underpass at Ruiru Sports Club and at Mang’u High School as well as provision of footpaths.
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