Skansen Bridge

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Skansen Bridge
Skansen bridge 2009 3.JPG
Coordinates 63°25′55″N10°22′48″E / 63.43185°N 10.380063°E / 63.43185; 10.380063 Coordinates: 63°25′55″N10°22′48″E / 63.43185°N 10.380063°E / 63.43185; 10.380063
Carries Trains
Crosses Trondheim Canal
Locale Trondheim
Official name Skansen jernbanebro
Maintained by Jernbaneverket
Characteristics
Longest span 52 metres (171 ft)
History
Opened March 22, 1918

The Skansen Bridge (Norwegian : Skansen jernbanebro) is a 52-meter span bascule railway bridge located at Skansen in Trondheim, Norway. [1]

Norwegian language North Germanic language spoken in Norway

Norwegian is a North Germanic language spoken mainly in Norway, where it is the official language. Along with Swedish and Danish, Norwegian forms a dialect continuum of more or less mutually intelligible local and regional varieties, and some Norwegian and Swedish dialects, in particular, are very close. These Scandinavian languages, together with Faroese and Icelandic as well as some extinct languages, constitute the North Germanic languages. Faroese and Icelandic are hardly mutually intelligible with Norwegian in their spoken form because continental Scandinavian has diverged from them. While the two Germanic languages with the greatest numbers of speakers, English and German, have close similarities with Norwegian, neither is mutually intelligible with it. Norwegian is a descendant of Old Norse, the common language of the Germanic peoples living in Scandinavia during the Viking Era.

Bascule bridge moveable bridge with a counterweight that continuously balances a span, or "leaf," throughout its upward swing to provide clearance for boat traffic

A bascule bridge is a moveable bridge with a counterweight that continuously balances a span, or "leaf", throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.

Trondheim City in Norway

Trondheim is a city and municipality in Trøndelag county, Norway. It has a population of 193,501, and is the third-most populous municipality in Norway, although the fourth largest urban area. Trondheim lies on the south shore of Trondheim Fjord at the mouth of the River Nidelva. The city is dominated by the Norwegian University of Science and Technology (NTNU), the Foundation for Scientific and Industrial Research (SINTEF), St. Olavs University Hospital and other technology-oriented institutions.

Contents

History

Railroad train over Skansen Bridge Shunter hauling train over Skansen Bridge.jpg
Railroad train over Skansen Bridge
Skansen Bridge on Vestre kanalhavn in Trondheim Vestre kanalhavn in Trondheim 01.jpg
Skansen Bridge on Vestre kanalhavn in Trondheim

The bridge was opened on March 22, 1918, allowing trains on the Dovre Line access to Trondheim Central Station while also being able to open to allow ships on the Trondheim Canal (Vestre kanalhavn) access to the Trondheimsfjord. It was built at the same time the Dovre Line was rebuilt from narrow gauge 1,067 mm (3 ft 6 in) to 1,435 mm (4 ft 8 12 in) standard gauge and the stretch between Marienborg and Trondheim Central Station was double tracked. [2]

Dovre Line railway line

The Dovre Line is the name of a Norwegian railway line with three slightly different lines which all lead to the historic city of Trondheim.

Trondheim Central Station railway station in Trondheim, Norway

Trondheim Central Station or Trondheim S is the main railway station serving the city of Trondheim, Norway. Located at Brattøra in the north part of the city centre, it is the terminus of the Dovre Line, running southwards, and the Nordland Line, which runs north. The railway is electrified south of the station but not north of it, so through trains must change locomotives at the station.

Ship Large buoyant watercraft

A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying passengers or goods, or in support of specialized missions, such as defense, research and fishing. Historically, a "ship" was a sailing vessel with at least three square-rigged masts and a full bowsprit. Ships are generally distinguished from boats, based on size, shape, load capacity, and tradition.

Skansen Bridge was designed by structural engineer Joseph Strauss, who among other things also constructed the Golden Gate Bridge in San Francisco. The Strauss designed single-leaf iron truss railway bridge with overhead counterweight provides clearance for boat traffic. This type of bridge has a counterweight suspended in a parallelogram, as well as motors and gears to lift and lower the end of the bridge. [3]

Joseph Strauss (engineer) American structural engineer

Joseph Baermann Strauss was an American structural engineer German descent, who revolutionized the design of bascule bridges. He was the chief engineer of the Golden Gate Bridge, a suspension bridge.

Golden Gate Bridge suspension bridge on the San Francisco Bay

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide (1.6 km) strait connecting San Francisco Bay and the Pacific Ocean. The structure links the American city of San Francisco, California – the northern tip of the San Francisco Peninsula – to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait. The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers.

San Francisco Consolidated city-county in California, United States

San Francisco, officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. San Francisco is the 13th-most populous city in the United States, and the fourth-most populous in California, with 884,363 residents as of 2017. It covers an area of about 46.89 square miles (121.4 km2), mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area, making it the second-most densely populated large US city, and the fifth-most densely populated U.S. county, behind only four of the five New York City boroughs. San Francisco is also part of the fifth-most populous primary statistical area in the United States, the San Jose–San Francisco–Oakland, CA Combined Statistical Area.

In 2006, Skansen Bridge received architectural conservation by the Norwegian Directorate for Cultural Heritage (Riksantikvaren) based upon Skansen Bridge being unique in Norway and only one of a few of its kind left in the world. The conservation includes the entire bridge including construction and technical equipment, the guard cabin and the transformer building. The conservation does not include the railway track, signal equipment or the overhead wires. [4]

Architectural conservation process through which the material, historical, and design integrity of humanitys built heritage are prolonged through carefully planned interventions

Architectural conservation describes the process through which the material, historical, and design integrity of any built heritage are prolonged through carefully planned interventions. The individual engaged in this pursuit is known as an architectural conservator-restorer. Decisions of when and how to engage in an intervention are critical to the ultimate conservation-restoration of cultural heritage. Ultimately, the decision is value based: a combination of artistic, contextual, and informational values is normally considered. In some cases, a decision to not intervene may be the most appropriate choice.

Norwegian Directorate for Cultural Heritage government agency

The Directorate for Cultural Heritage is a government agency responsible for the management of cultural heritage in Norway. Subordinate to the Norwegian Ministry of the Environment, it manages the Cultural Heritage Act of June 9, 1978. The directorate also has responsibilities under the Norwegian Planning and Building Law.

Transformer electrical artefact that transfers energy through electromagnetic induction

A transformer is a static electrical device that transfers electrical energy between two or more circuits. A varying current in one coil of the transformer produces a varying magnetic flux, which, in turn, induces a varying electromotive force across a second coil wound around the same core. Electrical energy can be transferred between the two coils, without a metallic connection between the two circuits. Faraday's law of induction discovered in 1831 described the induced voltage effect in any coil due to changing magnetic flux encircled by the coil.

Skansen Bridge with lumination at night Skansen bru (4244706680).jpg
Skansen Bridge with lumination at night
Skansen Bridge with lumination at night 
Skansen Bridge in opened position Skansen Bridge pl mtHrkh - panoramio.jpg
Skansen Bridge in opened position
Skansen Bridge in opened position 
Skansen Bridge in closed position Skansen bridge 2009 1.JPG
Skansen Bridge in closed position
Skansen Bridge in closed position 
Rail traffic across Skansen Bridge Tog passerer Skansen bru (7696878274).jpg
Rail traffic across Skansen Bridge
Rail traffic across Skansen Bridge 

See also

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Skansen Station railway station in Trondheim, Norway

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Gulfoss Tunnel is a 701-meter (2,300 ft) railway tunnel situated at in the municipality of Melhus in Trøndelag county, Norway. The tunnel runs beneath the village of Hovin, alongside the river Gaula past the Gulfossen waterfall. The tunnel carries a single, electrified track of the Dovrebanen railway line. The Trondhjem–Støren Line, which opened in 1864, crossed the river Gaula on a bridge to the opposite side of the river at the current site of the tunnel. This section of track was a challenge due to regular flooding. With the 1908 decision to build the Dovrebanen Line and gauge conversion, the Gulfossen section became one of two parts of the line to be reworked. Gulfoss Tunnel opened on 6 July 1918.

References

  1. Knut A Rosvold. "Skansen jernbanebru". Store norske leksikon. Retrieved December 1, 2017.
  2. "Skansen Bridges". trondheim.com. Retrieved December 1, 2017.
  3. "Joseph Strauss". structurae.net. Retrieved December 1, 2017.
  4. "Skansen jernbanebro i Trondheim fredet". Riksantikvaren. Retrieved December 1, 2017.
International Standard Book Number Unique numeric book identifier

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Coordinates: 63°25′54.26″N10°22′48.15″E / 63.4317389°N 10.3800417°E / 63.4317389; 10.3800417

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.