The line will evacuate electricity from Olkaria to Kisumu.
The project seeks to improve the accessibility of Lamu Port.
Upgrade will enable the airfield to handle bigger aircraft.
President is touring Kisumu ahead of Madaraka Day fete on Tuesday.
The 9.8km road has been under construction since July 2017.
The seven-phase project will be completed in 36 months.
Lawmakers now demand that the land be reallocated to locals.
The 62km motorway is set be operational by June 2022.
The 540-km road seeks to honour Mau Mau freedom fighters.
The four skywalks have been under construction for two years.