The Narok-Maai Mahiu road has been temporarily closed after a section of a bridge collapsed at the Siyabei area, next to Maasai Mara Technical Institute, following heavy rainfall.
Kenya National Highway Authority Assistant Director, Corporate Communications, Charles Njogu advised motorists to use alternative routes.
The route connects Nairobi to Narok, the world-famous Maasai Mara Game Reserve, Bomet, Kisii, Luo Nyanza, and Tanzania.
However, traffic in the route has been light due to the restriction of movement in and out of Nairobi three weeks ago due to the Covid-19 pandemic.
All traffic departments in the region have been alerted of the collapsing bridge due to the overflowing river.
Motorists from Homa Bay, Kuria, Migori Kisii, Bomet, and Narok headed for Nairobi were advised to use Kericho- Nakuru route.
According to road inspector Dancun Oduor and engineer Julie Ngei who inspected the bridge, the contractor will be on-site Friday (today) to start the repair works and no vehicle will be allowed to use the route since the bridge is very dangerous.
Police have already moved to the scene and blocked the road directing motorists to alternative routes to avoid the collapsing bridge.
The meteorological department has warned heavy rains will continue in many parts of the country, causing flooding.