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Follo Line

A new double-track express railway between Oslo Central Station and Ski, including the 19.5 km Blixtunnel.

Total length
22 km
Open today
22 km
Sections
1
Cost on record
€3.3B
1 of 1 sections carry a comparable figure

Restated into EUR at 2025 prices.

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Sections

Sections of Follo Line: status, length, dates, cost, funding and contractors
SectionsStatusLengthTimelineCostFundingContractorsContract terms
Oslo Central–Ski

Bane NOR first opened the line on 11 December 2022. Following a closure for repairs, it reopened for passenger traffic on 5 March 2023. A Bane NOR-commissioned evaluation reports an estimated total project cost of about NOK 37 billion in 2023 prices as of May 2023; this is an estimate, not a final outturn. The mapped OSM alignment is 21.67 km, close to the published 22 km.

Opened22 km
  1. 2015Construction start
  2. Dec 11, 2022Opened
  • Estimated kr37B(2023)Bane NOR's evaluation reports an estimated total project cost of about NOK 37 billion, price-adjusted to 2023, as of May 2023.
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Sources

  1. Jernbanedirektoratet: Follobanen line descriptionread Oct 11, 2026
  2. Bane NOR: King Harald opened the Follo Lineread Oct 11, 2026
  3. Bane NOR: Welcome back to the Follo Lineread Oct 11, 2026
  4. OpenStreetMap: Follobanen railway route relationread Oct 11, 2026
  5. Bane NOR: PwC evaluation of the Follo Line project, June 2023read Oct 12, 2026