Computer image

Storda Contract Period Storda Bridge is an element of the Triangle Link project, 1996-2001 which is located South of at the West Coast of . The bridge together with a deep sub-sea rock Completion tunnel provides mainland connection southwards for the 2001 island of . The is of a design

Construction cost traditional to Norway, i.e. concrete pylons, a narrow NOK 340 mill aerodynamic steel box girder in the main span with two traffic lanes and one pedestrian lane. Approach Services rendered are partly concrete, partly composite viaducts; thus the • Preliminary Design main cables in these areas are backstays, i.e. without • Complete tender design hangers. The main cables are rock- anchored. The • Complete detailed design bridge is set in unspoiled natural surroundings requiring • Construction follow up and special attention to architectural and environ-mental supervision considerations.

Client Norwegian Public Roads Administration

Pylon saddle during installation

Pylon during construction

Storda Bridge, cont’d Materials: Bridge girder vertical radius: 11460 m Concrete pylons: C45/C55 Bridge girder width: 13.5 m Steel box girder: S355 Bridge girder height: 2.7 m Cable wire: 1570 MPa Main span sag/span ratio: 1:10 Side span gradients: 1:2.37/1:2.65 Geometry: Cable diameter: 323 Main span: 677 m mm Total length: 1078 m Pylon height: 97 m Tender documents were prepared for two Ship Channel: H x B = 200 x 18 m separate cable alternatives, i.e. a locked coil alter-native and an air spun alternative. This meant that it was required to develop two sets of concepts in areas such as hanger clamps, saddles and anchorage details.