Norway considers wooden bridge across Lake Mjosa

Norway could be home to the world’s longest wooden bridge if the government gives the go-ahead for a span across Lake Mjosa. In a new report, researchers conclude that it is possible, both technically and economically, to build a 1.7km wooden bridge between the towns Biri and Moelv. Importantly, the report notes that construction cost differences between a wooden and concrete structure would be little. Estimates for a wooden bridge are around €420 million while for a concrete structure would come in about €
May 12, 2017 Read time: 2 mins
Norway could be home to the world’s longest wooden bridge if the government gives the go-ahead for a span across Lake Mjosa.


In a new report, researchers conclude that it is possible, both technically and economically, to build a 1.7km wooden bridge between the towns Biri and Moelv. Importantly, the report notes that construction cost differences between a wooden and concrete structure would be little.

Estimates for a wooden bridge are around €420 million while for a concrete structure would come in about €410 million, according to Trond Arne Stensby, project manager at the Norwegian Public Roads Administration - 1208 Statens vegvesen.

The 468m-deep Lake Mjøsa is one of the deepest in Europe and the fourth-deepest lake in Norway. It stretches for 117km and is about 15km at its widest. The lake is 123m above sea level and lies about 100km north of the capital Oslo.

One bridge already crosses the lake, the Mjøsa Bridge that was opened 1985 and is part of the main north-south highway in Norway, the E6. The concrete box girder bridge has spans of around 69m and rests on piles in water up to 40m deep. The bridge has two lanes of traffic and separate pedestrian and cycling lane.

Previous studies have considered a four-lane link on Highway E6 between the cities of Hamar and Lillehammer – site of the 1994 Winter Olympics. Timber construction alternatives include a truss structure with two underlying trusses composite with a concrete bridge deck. Typical span width is 69m and be cable stay supported.

Road Structures

For more information on companies in this article

Related Content

  • Riga's newest bridge improved traffic flow
    May 9, 2012
    An alliance of companies has come together to realise major infrastructure projects in Latvia including its biggest bridge. Patrick Smith reports. Riga, the Latvian capital, has the finest collection of Art Nouveau buildings in Europe and its centre is on the UNESCO World Heritage List. The city of some 750,000 people (the country's total population is 2.2 million) is bounded to the south by Lithuania and to the north by Estonia, and is the second largest in Baltic States. To the east is Russia and Belarus.
    Read More
  • Almost gone: Canada’s old Port Mann Bridge deconstructed
    August 14, 2015
    Three years ago a welder’s cut halved Canada’s old Port Mann Bridge. David Arminas reports from the banks of the Fraser River. By the time this issue of World Highways reaches you, one of Canada’s iconic steel arch bridges will be a shadow of its former self. It’s been a three-year demolition job since the first cut across the deck of the old Port Mann Bridge just outside the city of Vancouver on Canada’s Pacific coast. A new 10-lane 2.2km Port Mann Bridge opened in 2012 (see box). It runs parallel to the o
    Read More
  • Montreal’s new Champlain Bridge is shaping up for Christmas
    September 10, 2018
    Montreal’s Champlain Bridges - one going up, one coming down, reports David Arminas The importance of the new Champlain Bridge to Montreal and Canada can’t be overstated, given the crumbling nature of the not-so-old original Champlain Bridge. The original steel truss affair across the St Lawrence River and the adjacent St Lawrence Seaway canal is “a lifeline for residents and businesses” in greater Montréal, according to the national Auditor General - the public sector spending watchdog. “It accommodates
    Read More
  • New version of world’s longest floating bridge
    August 12, 2014
    The creation of a new version of the world’s longest floating bridge in Seattle, in the US state of Washington, is among the world’s most eye-catching current bridge engineering projects. It is an impressive example of the health of the bridge replacement sector, particularly in the US, leaving it well placed for growth. Guy Woodford reports Already the world’s longest floating bridge at over 2,310m long, the Governor Albert D Rosellini-Evergreen Point Floating Bridge in Seattle in the United States is g
    Read More

Highlighted Content