Key Facts

The Bjørvika project in meters:
• 1 100 meters of tunnels, 675 meters of which is immersed
• 8 000 meters of roads
• 5 700 meters of pedestrian and bicycle paths
• 3 500 meters of public transport lanes

Links east to west
The Bjørvika tunnel links the Festning tunnel in the west with the Ekeberg tunnel in the east. The three tunnels together constitute the Opera tunnel, and has an unbroken length of six kilometres from Framnes ( Kiel ferry terminal) to Ryen.

Complex work from the quay side and into the existing tunnels was carried out at both ends of the project. An underground road intersection was built in the rock at Ekeberg with exits and slip roads in both directions.

The section of the Festning tunnel adjacent to the new Bjørvika tunnel was lowered in order for the road level to be aligned with the immersed tunnel road level. A 100 meter long ‘basement’ was therefore excavated under the existing tunnel. ‘The basement’ was three meters high and a new floor was cast with a profile that met the immersed tunnel road. Moving the traffic down one floor was a critical phase of the project.