What is the latest status of the project “Folio Line Tunnel Project”?

The status recorded for “Folio Line Tunnel Project” is Under Construction.

Who are the main government, EPC, and private stakeholders for “Folio Line Tunnel Project”?

Taiyo maps the stakeholders of “Folio Line Tunnel Project”: government bodies (Bane NOR).

Where can I verify the source and access all details for “Folio Line Tunnel Project”?

This Taiyo project page references Next City along with the original URL (https://nextcity.org/urbanist-news/a-breakthrough-for-technology-in-norwegian-tunnel-project). Taiyo standardizes official data into a consistent, searchable project profile.

Folio Line Tunnel Project

Sector: Tunnel • Location: Oslo, Norway

Source: Next City

Project

Under Construction

The Folio Line project involves the construction of two 20-kilometer rail tunnels connecting Oslo with the southern suburb of Ski. The project utilizes advanced tunnel boring machines to navigate through some of the hardest rock types, significantly reducing travel time between the two locations.

Status: Under Construction
Sector: Tunnel, Rail, Government
Location: Oslo, Norway
Updated: 22 Jul 2026
Source: Next City

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Project Information

4 Q

The project “Folio Line Tunnel Project” is an infrastructure initiative in the Tunnel sector, located in Oslo, Norway. Taiyo aggregates data on it from Next City.

Participants

Sponsoring Agency

Status

Original status	Under Construction
Taiyo status	Under Construction
Taiyo last update	2026-07-22

Contact

Not available for this record.

Description

Description	The Folio Line project involves the construction of two 20-kilometer rail tunnels connecting Oslo with the southern suburb of Ski. The project utilizes advanced tunnel boring machines to navigate through some of the hardest rock types, significantly reducing travel time between the two locations.
Original sector	Transportation

Location

Country	Norway
City	Oslo

Source

Source	Next City
URL

More Details

Record type	Project
Sector	Tunnel, Rail, Government
Article published date	2025-03-20

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