Stolma Bridge
Encyclopedia
Stolma Bridge is a road bridge over the Stolmen sound in Austevoll
municipality, Hordaland
. It connects the islands Stolmen
and Selbjørn
. The bridge is 467 meters long and has three spans, the largest of which is 301 meters.
prestressed concrete
box girder bridge
using low density concrete, with a vertical clearance of 30 meters. To achieve its record length for box girder construction, the hollow concrete box girders are 7 meters wide and taper from 15 meters inbox beam depth over the piers to 3.5 meters 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 1.94 tonne/m³. The short end spans which cantilever the main span are ballisted with gravel. The bridge was opened for traffic 14 November 1998 and is part of County Road 151. It was then the world's longest bridge of this type.
Austevoll
Austevoll is a municipality and an archipelago in the district of Midthordland in the county of Hordaland in Western Norway, Norway. Austevoll was separated from Sund on 1 January 1886....
municipality, Hordaland
Hordaland
is a county in Norway, bordering Sogn og Fjordane, Buskerud, Telemark and Rogaland. Hordaland is the third largest county after Akershus and Oslo by population. The county administration is located in Bergen...
. It connects the islands Stolmen
Stolmen
Stolmen is an island in Austevoll municipality, Hordaland, Norway, southwest of Huftarøy. It is located west of Selbjørn, and south of Stora Kalsøy. The commercial centre of Stolmen is Våge. The island have 206 inhabitants in 2007. The highest point is Såta....
and Selbjørn
Selbjørn
Selbjørn is the second largest island in the Austevoll municipality, Hordaland, Norway. The commercial centre of Selbjørn is Bekkjarvik.- Name :...
. The bridge is 467 meters long and has three spans, the largest of which is 301 meters.
Bridge design
The bridge is a cantileveredCantilever bridge
A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from...
prestressed concrete
Prestressed concrete
Prestressed concrete is a method for overcoming concrete's natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete...
box girder bridge
Box girder bridge
A box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section...
using low density concrete, with a vertical clearance of 30 meters. To achieve its record length for box girder construction, the hollow concrete box girders are 7 meters wide and taper from 15 meters inbox beam depth over the piers to 3.5 meters 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 1.94 tonne/m³. The short end spans which cantilever the main span are ballisted with gravel. The bridge was opened for traffic 14 November 1998 and is part of County Road 151. It was then the world's longest bridge of this type.