The great metro upgrade
Replacement offer
Some subway lines will be closed, and replacement buses will be provided for the affected sections. We understand that this may create challenges in your daily commute, and we are working hard to offer you a good alternative during all phases of the upgrade.
Detailed overview
We will keep this section updated. Changes to dates may occur.
02.04 – 06.04: Stortinget T closed
Stortinget metro station is closed around the clock from Thursday 2 April through Monday 6 April. This means that the metro trains will pass the station without stopping.
The closure is due to the replacement of a switchboard/fuse cabinet.
05.04 – 07.04: Line 1 and 4
The section between Helsfyr and Bergkrystallen will be closed from Saturday 5 April at 04:00 until Monday 7 April at 02:00. Line 1 will therefore only run between Frognerseteren and Helsfyr, while Line 4 will run between Vestli and Ryen.
Bus 4B will replace the Metro at the closed stations during this period, running between Ryen and Bergkrystallen.
The closure is due to testing of a new signalling system (CBTC).
13.04 – 17.04: Line 3
The section between Jar and Smestad will be closed in the evenings and at night from 21:00 – 02:00, from Monday the 13th of April until the night of Friday the 17th of April. Line 3 will therefore only run between Mortensrud–Smestad and Kolsås–Jar. The metro will run as normal during daytime hours.
A replacement bus service will operate on the closed section, running between Jar and Majorstuen.
The closure is due to the installation of a new signalling system (CBTC).
20.04 – 30.04: Line 3
The section between Gjønnes and Ullernåsen will be closed in the evenings and at night from 21:00 – 02:00, from Monday the 20th of April until the night of Thursday the 30th of April. Line 3 will therefore only run between Mortensrud–Ullernåsen and Kolsås–Gjønnes. The metro will run as normal during daytime hours.
A replacement bus service will operate on the closed section, running between Gjønnes and Majorstuen.
The closure is due to the installation of a new signalling system (CBTC).
02.05 – 12.05: Line 3
The section between Kolsås and Ringstabekk will be closed in the evenings and at night from 21:00 – 02:00, from Saturday the 2nd of May until the night of Tuesday the 12th of May. Line 3 will therefore only run between Mortensrud–Ringstabekk. The metro will run as normal during daytime hours.
A replacement bus service will operate on the closed section, running between Kolsås and Jar.
The closure is due to the installation of a new signalling system (CBTC).
Why is the metro being upgraded?
The metro is being upgraded to provide you with faster travel and more frequent departures. That's why we call the project 'The great metro upgrade'. The upgrade consists of three major projects:
- Installation of new signaling and interlocking system (CBTC)
- Upgrade of Majorstuen station
- Connection of the Fornebu Line to the existing metro network
Sporveien and Fornebubanen are carrying out the work, which will provide Oslo with a more modern and efficient metro network.
New signaling and control system (CBTC)
Sporveien is installing a new, digital signalling and safety system on the Metro called CBTC (Communication-Based Train Control). The reason is that the current system is approaching the end of its lifespan, and that a new system will increase the capacity of the Metro. The new signalling system allows trains to run closer together and more frequently, as the trains automatically adjust the distance between them. The result will be more departures for passengers.
Sporveien is in full swing replacing the signalling system, and the first stretch was between Brattlikollen and Bergkrystallen. The work is admittedly extensive, involving among other things 5.4 kilometres of cables that need to be laid for each train.
To ensure that the new signalling system works as intended, the installation will happen gradually. There will therefore be short periods of closed stations in 2026. The work will often take place in the evening to inconvenience travellers as little as possible. Ruter will set up replacement bus services during the work periods to get people to their destinations.
More about signaling systems on Sporveien's websiteMajorstuen Station
Majorstuen is one of the most important stations on the Oslo Metro. The upgrade will make it easier to travel, allow for more departures, and increase capacity.
The upgrades of the station are:
- larger platforms with more space
- multiple accesses to the station
- a new pedestrian and bicycle bridge for safer and faster crossing
The new bridge opened on February 18, but some work remains before it is completely finished. With the new signaling system, the upgrades will facilitate a capacity of 36-40 trains per hour in each direction through the downtown tunnel.
More about Majorstuen station on Sporveien's websiteFornebu Line
The Fornebubanen is a new metro line from Fornebu to Majorstuen, via Lysaker and Skøyen. When the line is connected to the current metro network, travelers will have a direct route between Fornebu and Oslo. This will strengthen public transport options, relieve car traffic in the area, and provide more people with an environmentally friendly travel alternative.
More about the Fornebu Line on the Oslo municipality's website