The Stolma Bridge () is a

road bridge A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, whi ...

over the Stolmasundet

strait A strait is a water body connecting two seas or water basins. The surface water is, for the most part, at the same elevation on both sides and flows through the strait in both directions, even though the topography generally constricts the ...

Austevoll Austevoll is a List of municipalities of Norway, municipality and an archipelago in Vestland county, Norway. It is located in the Traditional districts of Norway, traditional district of Midthordland in Western Norway. The administrative centre ...

municipality,

Vestland Vestland is a Counties of Norway, county in Norway. The county is located in Western Norway, and its administrative centre is Bergen, where the executive and political leadership is based. The County governor (Norway), County Governor is based in ...

county,

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

. It connects the islands of

Stolmen Stolmen is an island in Austevoll municipality in Vestland county, Norway. The island lies in a large archipelago just north of the Selbjørnsfjorden. The island of Selbjørn lies to the east, the islands of Huftarøy and Hundvåko lie to th ...

and

Selbjørn Selbjørn is an island in Austevoll municipality in Vestland county, Norway. The island is the second largest in the municipality (after Huftarøy). Most of the population lives along the northern and eastern coastlines of the island. The com ...

. The bridge is long and has three spans, the largest of which is . The construction cost was . The bridge was opened for traffic 14 November 1998 and is part of County Road 5138. The main span was the world's longest cantilever box-girder span until it was surpassed by the Shibanpo Second Yangtze River Bridge in

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

Bridge design

The bridge is a

cantilevered A cantilever is a rigid structural element that extends horizontally and is unsupported at one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilev ...

prestressed concrete Prestressed concrete is a form of concrete used in construction. It is substantially prestressed (Compression (physics), compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. Post-t ...

box girder bridge A box girder bridge, or box section bridge, is a bridge in which the main beam (structure), beams comprise girders in the shape of a hollow box. The box girder normally comprises prestressed concrete, structural steel, or a composite ma ...

using low density concrete, with a vertical clearance of . To achieve its record length for box girder construction, the hollow concrete box girders are wide and taper from inbox beam depth over the piers to in the center of the span. To reduce its weight, the center of the main span is constructed of high-strength low-density concrete with a density of . The short end spans which cantilever the main span are ballasted with gravel.

References

Road bridges in Vestland Austevoll {{Norway-bridge-struct-stub

Bridge design

See also

References