 Route 3 is a short connector between routes 1 and 2, and route 4 is the longest of the Kitakyushu Expressway network, serving most of the city from north to south.Route 5 is a short link serving the inner port area.In addition, Kitakyushu is bypassed by the Kyushu Expressway, the main north-south route on the island of Kyushu.