Frednes Bridge ( no, Frednesbrua) is a double-leaf bascule bridge on Highway 356 in

Porsgrunn Municipality is a city and municipality in Telemark in the county of Vestfold og Telemark in Norway. It is part of the traditional region of Grenland. The administrative centre of the municipality is the city of Porsgrunn. The municipality of Porsgrunn was ...

Vestfold og Telemark Vestfold og Telemark (; ) is a county under disestablishment in Norway. The county is the southernmost one of Eastern Norway and consists of two distinct and separate traditional regions: the former counties of Telemark and (most of) Vestfold. T ...

county,

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t ...

. The long bridge crosses the

Porsgrunn River is a city and municipality in Telemark in the county of Vestfold og Telemark in Norway. It is part of the traditional region of Grenland. The administrative centre of the municipality is the city of Porsgrunn. The municipality of Porsgrunn was ...

(''Porsgrunnselva'') just before it flows out into the

Frierfjord Frierfjorden is a fjord in the Grenland traditional district in the county of Telemark, Norway. It is an arm of the Langesundsfjord and well into the 1700s was also known as the Langesundsfjord. Frierfjorden stretches from the opening to Lange ...

at the site of Norsk Hydro's factory complex on Herøya. The bridge was completed in 1995. It is constructed of

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

with a steel

drawbridge A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat. In some forms of English, including American English, the word ''drawbridge'' commonly refers to all types of moveable ...

span over the main channel. It is long, with a main span of , and beneath it, there is a clearance for vessels of at mean water level. Frednes was the historic name of an old district of the town of Porsgrunn as well as the name of the Frednes farm. Frednes was purchased by shipping magnate Christen Knudsen who moved there with his family in 1855. The manor house was expanded in 1865, but burned down in 1952 and was not rebuilt.

References

Bridges in Vestfold og Telemark Buildings and structures in Porsgrunn 1995 establishments in Norway Bascule bridges {{VestfoldTelemark-geo-stub

See also

References