ACCIONA and its partners have completed the design and construction of the 8.2 km highway that crosses Roskilde Fjord in Denmark.
This milestone has been officially marked by the signing of the handover agreement with the client, the Danish Road Directorate (DRD), which made special mention of the coordination and hard work carried out by ACCIONA and its partners during every phase of the project.
The project, awarded in October 2016, consisted of designing and constructing an 8.2 km toll highway with four lanes (two in each direction), with a 1.36 km concrete bridge over Roskilde Fjord between Marbaekvej and Torslev Hage in Denmark.
The bridge, which has 16 spans between piles located 83 metres apart, was constructed using the progressive cantilever technique, launching precast beams.The foundations of the bridge consist of 54 piles, up to two metres in diameter and 50 metres long.A total of 492 precast elements were used to construct the bridge using the joined segmental system with each segment weighing around 100 tonnes. These were precast in Poland by Mostostal, an ACCIONA subsidiary, and transported to Denmark by sea.
In addition to the bridge over Roskilde Fjord, the highway has 11 other smaller structures such as bridges, wildlife passes and a cycle lane, as well as a kilometre of retaining wall and a three kilometre acoustic barrier.
Workers from more than 20 nations worked on this project, which is ACCIONA’s first contract in Denmark.
The social and environmental requirements were one of the top priorities on the project, both for ACCIONA and its partners, and for the client, as the highway crosses various protected areas, including a zone that is part of the EU’s Natura 2000 network that is home to some of Europe’s most valuable and threatened species.
Consequently, the design of the bridge was optimised to reduce the number of piles in the fjord to protect the aquatic environment, as well as selecting construction methods that would reduce the pollution risk as much as possible.
The highway that crosses Roskilde Fjord will open to traffic on 30 September following the inauguration event on 28 September.