The European route E18 highway is the main road for eastern Kristiansand and Lillesand, it is highway from Kristiansand, through Lillesand towards Arendal. It has four lanes to Grimstad and two lanes from Grimstad to Arendal. E18 continues through Aust-Agder and on to Oslo. The European route E39 highway is the main road for western Kristiansand, lower Songdalen, and Søgne. It is highway from downtown Kristiansand to Hellemyr, and from Brennåsen in Songdalen, to Tangvall in Søgne. E39 continues through Vest-Agder and on to Stavanger.