The facility sits on a 2,600-hectare swamp in the Lekki area of Lagos.
The complex will provide a permanent seat for the court in Arusha.
The closing date for the international tender is 21 July 2023.
The project aims to provide water to six million households.
The signalised system is expected to see traffic flow in multiple directions.
The government will build 2,746kms of the SGR at a cost Sh2.1 trillion.
This will support construction of 1,443-km Hoima-Tanga pipeline.
The controversial dam is 90% complete amid rising political tensions.
The Nairobi Core BRT 3 will feature zero emission electric buses.
Money will aid conversion of Kiambu Road into a dual carriageway.