The Bjørnafjord situated south of Bergen on the western coast of Norway is demanding to cross as it has a depth of up to 600 metres in some places. Our assessments date back to 2009, when the Norwegian Public Roads Administration concluded that it is possible to cross the Bjørnafjord by bridge. The floating bridge will be more than five kilometers long, crossing the Bjørnafjord between Tysnes in the south and Os in the north.
A floating bridge concept was chosen
– We have worked systematically together with professional companies as well as scientific researchers to develop the bridge concept and develop new technology to make the crossing possible. In 2018 and 2019, two advisory teams (AMC and OON) worked independently to assess what type of floating bridge could be suitable for crossing the fjord. Both teams concluded that a C-shaped floating bridge with side anchoring would be the best alternative across the fjord, says Kjell Håvard Belsvik, project leader for the Bjørnafjord floating bridge. Belsvik states that the fact that both teams proposed the same solution serves as a guarantee for the chosen concept. In addition, the C-shaped floating bridge has been assured and verified by a third party, the Norwegian company DNV GL.
The reports are available
The Norwegian Public Roads Administration uses the "Brage" system for reports, you will find an overview of all the reports and links to Brage from our reports page. The reports are in English. On the same page there are also reports from the early concept development.
– Our work on the bridge is receiving a lot of attention, also from international companies that wish to be involved in the work. The work on the floating bridge, which will be the world's longest floating bridge, arouses great interest among engineers, but the reports may also be of interest to anyone who finds bridge technology interesting, Belsvik concludes.
The two advisory teams
OON: consists of the companies: Dr.techn. Olav Olsen and Norconsult in collaboration with Prodtex, Pure Logic, Buksér og Berging, Miko Marine, Heyerdahl Arkitekter, Haug og Blom-Bakke, FORCE Technology and Swerim.
AMC: consists of the companies Aas-Jakobsen, Cowi, Multiconsult and Johs.Holt in collaboration with Aker Solutions, NGI, Moss Maritime, Dissing+Weitling and Entail.