The toll road will be closed from 9:30pm, Saturday, September 7, until further notice.
The Moja Expressway Company, which operates the 27-kilometre Nairobi Expressway, has announced a temporary closure of the elevated toll road.
In a statement on Saturday, September 7, the companies notified motorists that the expressway would not be operational from 9:30 pm until further notice.
The closure, Moja Expressway said, was necessitated by the third edition of the Nairobi City Marathon set to take place on Sunday, September 8.
"Please note that the Nairobi Expressway will be temporarily closed from Saturday, 7th September 2024 at 9:30 pm to pave way for the 3rd edition of the Nairobi City Marathon.
"The resumption of normal operations will be communicated in due course," read the statement.
Motorists were counselled to plan their journeys accordingly or use alternative routes to avoid inconveniences.
The marathon event will accommodate various race categories, including wheelchair race and half marathon.
In the half marathon, winners in both women's and men's categories will take home Sh 150,000 prize money, first runners-up Sh 80,000, and second runners-up Sh 50,000.
Winners of the 42-kilometre marathon, both men and women, will take home Sh 3.5 million, first runners-up Sh 2.25 million, and second runners-up Sh 1.5 million.