Farrisbrua

Last updated
Farrisbrua
Farrisbrua mars 2018 (3).jpg
Photo: Petter Ulleland
Coordinates 59°03′23″N10°00′39″E / 59.056520°N 10.010844°E / 59.056520; 10.010844 Coordinates: 59°03′23″N10°00′39″E / 59.056520°N 10.010844°E / 59.056520; 10.010844
Carries Motor vehicles
Crosses Farrisvatnet
Locale Larvik, Norway
Characteristics
Design Cable-stayed bridge
Material Concrete and steel
Total length570 metres (1,870 ft)
Width28.0 metres (91.9 ft)
Height70 metres (230 ft)
Longest span28 metres (92 ft)
History
Construction start2013 (2013)
Construction endExpected January 2018
OpenedMarch 2018
Location
Farrisbrua

The Farrisbrua (Farris Bridge) is a major road bridge crossing the Farris lake just north of Larvik, Norway. The bridge is part of the expansion of the E18 motorway from the antiquated single carriageway to modern dual carriageway standards, enabling increased speeds and traffic volumes between the eastern and southern parts of the country. It was built between 2013 and 2018, to a cost of 718 million NOK (excl. VAT). [1]

Contents

Dimensions and structure

Farrisbrua is 570 m in length and 28 m wide. It goes in a horizontal curve around the southern bank of the Farris water. Mainly built in concrete, the 120 meter middle section is a cable-stayed bridge in steel with concrete towers 70 meters tall. The bridge also has a slight incline from the east to the west, up to the tunnel in Martineåsen.

The bridge's largest foundation is that of the tower. This foundation is made of 12 steel pillars measuring 2 meters in diameter, filled with armour and concrete. The pillars are drilled through the moraine masses down to bedrock, which is around 80 meters below the surface. On top of these pillars lies a concrete plate that is 4 meters thick and covers 1000 square meters. There are also 9 smaller foundations that vary in size. [2]

Construction

The Farris bridge under construction on 7 June 2017 Farrisbrua.jpg
The Farris bridge under construction on 7 June 2017

The expansion of the motorway from Oslo to Kristiansand (and then onwards to Stavanger) was proposed many decades ago, but due to the slow political process, [3] the actual construction is still ongoing. The construction of the Farris bridge was finally agreed upon as part of the building of a 7 km stretch of motorway between Bommestad and Sky. Building started in 2013 and completion scheduled for New Year 2018. After a three-month post-ponement, [4] the bridge finally opened in March 2018. [5] [6]

The bridge was built by Joint Venture Farris Bru ANS. Initially, it was Polish Bilfinger Infrastructure (65%) and German Bilfinger Constructions (35%) who formed this joint venture and obtained the contract. The two companies were bought by Austrian PORR and Swiss Implenia in 2015, which continued the work from there. [7] [8]

Literature

See also

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References

  1. ↑ "E18 Bommestad–Sky".
  2. ↑ "EK2: Farrisbrua | Statens vegvesen". www.vegvesen.no. Archived from the original on 2014-10-04.
  3. ↑ "Vegvesenet er lei av at veibygging tar lang tid". 3 October 2011.
  4. ↑ "Utsetter åpningen av Farrisbrua i tre måneder". 10 November 2017.
  5. ↑ "Prøveåpning av Farrisbrua i Larvik". 19 March 2018.
  6. ↑ Åpning av Farris-brua 19 Mars 2018. Arnfinn Fredriksen. 22 March 2018. Retrieved 28 September 2021– via YouTube.
  7. ↑ "Implenia is acquiring Bilfinger Construction". Tunnel Online. 1 January 2015. Retrieved 31 October 2018.
  8. ↑ "EK2: Farrisbrua | Statens vegvesen". www.vegvesen.no. Archived from the original on 2014-10-04.
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