# Skansen Bridge

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The **Skansen Bridge** (Norwegian: *Skansen jernbanebro*) is a 52-meter span fixed-trunnion [bascule](/source/Bascule_bridge) [railway bridge](/source/Railway_bridge) located at [Skansen](/source/Skansen,_Trondheim) in [Trondheim](/source/Trondheim), [Norway](/source/Norway).[1]

## History

The bridge was opened on March 22, 1918, allowing trains on the [Dovre Line](/source/Dovre_Line) access to [Trondheim Central Station](/source/Trondheim_Central_Station) while also being able to open to allow [ships](/source/Ship) on the Trondheim Canal (*Vestre kanalhavn*) access to the [Trondheimsfjord](/source/Trondheimsfjord). It was built at the same time the [Dovre Line](/source/Dovre_Line) was rebuilt from [narrow gauge](/source/Narrow_gauge_railway) to and the stretch between [Marienborg](/source/Marienborg_station) and Trondheim Central Station was [double tracked](/source/Double_track).[2]

Skansen Bridge was designed by structural engineer [Joseph Strauss](/source/Joseph_Strauss_(engineer)), who among other things also constructed the [Golden Gate Bridge](/source/Golden_Gate_Bridge) in [San Francisco](/source/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](/source/Parallelogram), as well as motors and gears to lift and lower the end of the bridge.[3]

In 2006, Skansen Bridge received [architectural conservation](/source/Architectural_conservation) by the [Norwegian Directorate for Cultural Heritage](/source/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](/source/Transformer). The conservation does not include the [railway track](/source/Railway_track), [signal equipment](/source/Railway_signaling) or the [overhead wires](/source/Overhead_wire).[4]

## See also

- [Skansen Station](/source/Skansen_Station)
- [List of bascule bridges](/source/List_of_bascule_bridges)

## References

1. Knut A Rosvold. ["Skansen jernbanebru"](https://snl.no/Skansen_jernbanebru). Store norske leksikon. Retrieved December 1, 2017.

1. ["Skansen Bridges"](https://www.trondheim.com/skansenbruene). trondheim.com. Retrieved December 1, 2017.

1. ["Joseph Strauss"](https://structurae.net/persons/joseph-strauss). structurae.net. Retrieved December 1, 2017.

1. ["Skansen jernbanebro i Trondheim fredet"](https://www.riksantikvaren.no/Fredning/Fredninger/Eldre-fredninger/2006/Skansen-jernbanebro-i-Trondheim-fredet). Riksantikvaren. Retrieved December 1, 2017.

## Related reading

- Koglin, Terry L. (2003) *Movable bridge engineering* (John Wiley and Sons) ISBN 978-0-471-41960-0

## External links

- [Decision to conserve bridge](http://www.riksantikvaren.no/?module=Articles;action=Article.publicOpen;ID=3837) (in Norwegian)

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Adapted from the Wikipedia article [Skansen Bridge](https://en.wikipedia.org/wiki/Skansen_Bridge) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Skansen_Bridge?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.