Crown Princess Mary bridge Roskilde

The project consisted of the construction of a new 4-lane dual carriageway over a distance of 8.2 km, linking Frederikssund and Skibbyvej. It also covered a 1.4 km tolled high bridge over the fjord and 11 smaller civil structures (bridges, ecoducts, cycle lane passages). The new crossing replaces a bascule bridge built in 1935 and its goal is to relieve severe traffic congestion.

An important award criterion was the consideration of the environment surrounding the project. The Fjord of Roskilde is designated as a Natura 2000 area, as it is a habitat for sensitive vegetation (eelgrass) and an important refuge for waterfowls. The location of residential areas very near to the construction site and difficult access via waterways and roads posed additional challenges with regards to logistics, dust, noise and traffic management.