Sections of the highway are damaged, with broken drainage covers.
Thika Road completion has also seen malls being rolled out along the route.
The road is inspired by the N1 highway that runs from Cape Town to Harare.
Construction of the Tazara Flyover commenced in 2016 and was completed in 29 months.
The facility is expected to boost power supply to the port to 132Kv from 11Kv.
More than 60 road projects countrywide have stalled due to lack of funds.
The State is seeking to resolve the telecommunication cable cuts issue.
Kampala is in talks with South Sudan to build the oil pipeline from the Albertine to Juba.
KeNHA will wait for MPs to pass laws that will allow the erection of toll stations.
The High Court has stopped the State from acquiring land from the Nairobi National Park.