The Knappe Tunnel is a four-lane, twin-tube motorway tunnel in the city-municipality of Bergen in Vestland county, Norway. The tunnel is part of County Road 557 and consists of the first and second stages of the four-lane motorway project called Ring Road West. The southern part of the tunnel goes under the Nordåsstraumen, a small strait connecting the lake Nordåsvatnet and the Grimstadfjorden.