The Kenya National Highways Authority (KeNHA) has now rendered the Mai Mahiu route impassable advising motorists to find alternative routes.
In a travel advisory, the agency has told motorists plying the Naivasha and Narok routes to expect heavy traffic congestion today.
According to KeNHA, approximately 700 meters from Mai Mahiu towards Naivasha and 1km from Mai Mahiu towards Suswa/Narok have been affected.
“These areas are heavily affected, with road blockages reported. Currently, traffic is at a standstill around Mai Mahiu centre,” KeNHA said.
It has attributed this to the heavy rains in the catchment areas of Kinale and Kijabe have led water courses to experience an upsurge which has led to the washing away of debris and several houses.
"Motorists are advised to expect high traffic congestion around Mai Mahiu. Road users are expected to plan their routes accordingly and exercise caution when travelling through the affected areas,” it said.
Heavy rains are being experienced in many parts of the country amid calls for caution.
At least 20 people have been confirmed dead following flash floods that wiped out several homes in Kamuchiri Village, Mai Mahiu, Nakuru County following the heavy rains.
The floodwaters originated from a nearby river that broke its banks on Sunday night, according to the Kenya Red Cross.
“Several people have been taken to a health facility in Mai Mahiu due to flash floods affecting Kamuchiri Village,” the Kenya Red Cross said.
“The floodwaters are reported to have originated from a nearby river that broke its banks.”
Naivasha police commander Stephen Kirui confirmed the tragedy saying rescue missions were ongoing.
He said that several others have been rushed to Naivasha Hospital for treatment.
The toll may increase as the search and rescue mission goes on in the area.
Teams from the Kenya Police, County Disaster team, Kenya Red Cross and community members are at the scene, officials said.
