July 6, 2022

Fornebubanen is a metro line that will be built between Majorstuen in Oslo and Fornebu in Bærum, as an extension of the metro in Oslo. Construction began on 11 December 2020, and the track is expected to be ready in 2029.


Previous studies

In 1919, Kristiania and Aker tramway committee proposed a branch from Lilleakerbanen to Fornebu, but in 1934 it was decided to build an airport instead of housing at Fornebu. The runway plans were first reconsidered when the main airport was added to Gardermoen in 1998. In 1997, it was proposed to build a combined runway from Fornebu to central Oslo via Lysaker. A study from 2001 considered a number of alternatives. They included four alternatives for railway connection - including a branch line from Lysaker and a continuous line Lysaker – Fornebu – Sandvika. . In April the following year, Akershus County Municipality confirmed that an automatic railway was to be built at Fornebu and recommended a regional connection by metro from Lysaker to Oslo. These two decisions were reversed in 2007, when Akershus County Municipality decided to build a city line to Fornebu. In May 2008, Ruter AS was commissioned to study a solution connected to the existing public transport network at Skøyen. In November 2009, a final report for this report was published. An urban line from Fornebu via Lysaker with a connection to the Lilleaker line at Furulund was presented as the main alternative, while a metro from Fornebu with a connection to the Kolsås line at Ullernåsen and a previously adopted automatic line to Lysaker were used as comparison alternatives. The forecasts for the traffic base were added to the year 2030. In terms of traffic, it was a problem that the county border went by Lysaker. In 2011, Ruter's board recommended building a metro via Skøyen and Lysaker to Fornebu (Oslo package 3).

Today's project

This was followed by several reports and studies before Ruter's board in June 2011 recommended that the connection be built as a metro from Fornebu via Lysaker, Skøyen and Vækerø to Majorstuen, among other things based on the «urban development elements». In this way, the driving time is shorter, e.g. 17 minutes Jernbanetorget / Oslo S – Fornebu Senter against 21–29 min for the other alternatives. Ruter also recommended that the development take place through a public-private partnership. The proposed route goes mainly in an underground tunnel and constitutes a stretch of 8.1 km. The development in 2011 was estimated to cost NOK 4.5 billion. The state will cover 50 per cent, motorists (tolls) 26 per cent and landowners 11 per cent. The remaining amount, approx. 600 million, Ruter tries to get covered by private business. The county council in Akershus approved on 17 December 2012 a metro solution from Fornebu to Majorstuen via Lysaker, Vækerø and Skøyen. The City Council of Oslo made a similar decision on 5.6.2013. The zoning plan in Bærum, the section Fornebu – Lysaker incl. Lysaker station, was approved by the municipal council in 2015 (up to Lysaker station) and in 2016 (Lysaker station). The zoning plan in Oslo, from Lysaker to Majorstuen. The zoning plan in Oslo was adopted on 31 January 2018. Construction start for the Fornebu line was in December 2020. The first explosive charge was fired by the then Environment and Transport Agency Lan Marie Berg (MDG) on 11 December 2020. At that time, the goal was for the line to be opened by the end. of 2027.

Cost and schedule

The construction cost is estimated at just over NOK 16 billion with opening in 2027. 50% state funding is planned in addition to urban environment agreement funds, Oslo package 3 funds and landowner contributions. In 2022, the estimate for construction costs was increased to NOK 21.5 billion. In 2022, the price was up to NOK 26.4 billion, and the time for completion was set at 2029.


The table below shows the distance and time estimates for the anb