Nairobi–Mombasa Expressway Nairobi–Mombasa Expressway The Nairobi–Mombasa Expressway, also known as the Mombasa–Nairobi Expressway or the Nairobi–Mombasa Highway, is a proposed four-lane toll highway in Kenya. The highway will link Nairobi, the capital and largest city of Kenya to Mombasa, the largest seaport of the country. The new highway is expected to cut travel times between the two cities from the current 6 to 10 hours to approximately four hours. The road starts at the Namanga interchange along the Nairobi–Mombasa Road, in the city of Nairobi. It continues in a general southeasterly direction, through seven Kenya Counties to end in the city of
Lagos–Mombasa Highway west. The eastern section of the Lagos–Mombasa Highway is also the only part of the whole network where the name 'Trans-African Highway' is in common use and is seen on a few road signs. Lagos–Mombasa Highway The Lagos–Mombasa Highway (also known as the "Mombasa-Lagos Highway") is Trans-African Highway 8 and is the principal road route between West and East Africa. It has a length of and is contiguous with the Dakar-Lagos Highway with which it will form (when complete) the longest east-west crossing of the continent for a total distance of Part of the transcontinental road network under development by