Södra länken (The southern link), National road 75 (Riksväg 75), is a motorway in Sweden connecting Essingeleden (E4, E20), Stockholm with Värmdöleden (county road 222), Nacka. Södra länken is 6 km in length, of which 4.7 km is in tunnels. This makes it the second longest urban motorway tunnel in Europe after Madrid M30 orbital motorway. The tunnel is 4 lanes wide each way at its widest point (total 8 lanes).