Proposal for a Submerged Floating Tube Bridge as part of the Bømlafjord crossing
Mathias Egeland Eidem
(Region West, Norwegian Public Road Administration, Norway)
Jorunn Sekse (Road directorate, Norwegian Public Road Administration, Norway)
Arianna Minoretti (Region West, Norwegian Public Road Administration, Norway)
|Conference:||IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016|
|Published in:||Challenges in Design and Construction of an Innovative and Sustainable Built Environment|
|Total no. of pages:||5|
A proposal for a Submerged Floating Tube Bridge as part of a scheme for a new and improved fixed link along the E39 route, across the Bømlafjord in Norway, is presented.
The existing crossing is not able to satisfy the previsions of the increase in traffic and the new rules on the road alignment and gradient. The new requirements, including the need of a carriageway with two lanes for each direction, imply a complete replacement of the existing tunnel with a longer one. The possibility to substitute the new bridge, necessary for the northern part of the crossing, with a SFTB (Submerged Floating Tube Bridge) allow to reduce the parts of the tunnel in the southern part that have to be substituted. The advantages of the proposed scheme for the crossing are evaluated and discussed. A comparison, in terms of costs, of the different solutions for the design is presented.
bridges offshore structures tunnel