Osterøy Bridge, Norway

Aas-Jakobsen - Structural Engineer/Designer
Date Built
Opened 1997
6 km east of Arna, Norway
The Osterøy Suspension Bridge carries County Road 566 over the Sorfjorden linking the island of Osterøy with the mainland.  With a total length of 1,065 metres and a main span of 595 metres, it is the third longest suspension bridge in Norway.  The main towers are 121 metres high. 

Built at a cost of 308 million NOK, this bridge took nearly 3 decades to become a reality from first being proposed.  The bridge is designed to withstand strong winds but it did have issues at first with disturbing oscillations.  This was addressed by retrofitting guide vanes beneath the box girder deck.  This can be seen in the image below, (shown here under a Creative Commons Attribution-Share Alike 2.0 Generic license, the details of which can be seen by clicking on the image.)