Oslofjord Tunnel, Drøbak
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Facts and practical information
The Oslofjord Tunnel is a subsea road tunnel which traverses the Oslofjord, connecting Hurum and Frogn in Norway. Carrying three lanes, the 7,306-meter long tunnel reaches a depth of 134 meters below mean sea level. The tunnel has a maximum gradient of seven percent. It acts as the main link connecting eastern and western Viken county, supplementing the Moss–Horten Ferry which runs further south. The tunnel is since 2018 a part of European route E134, until 2018 it was part of National Road 23. ()
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Drøbak
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Day trips
Oslofjord Tunnel – popular in the area (distance from the attraction)
Nearby attractions include: Oscarsborg Fortress, Norwegian Outlet, Årungen, Norwegian University of Life Sciences.