Arna-Stanghelle joint project

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Under study
Selecting alternative
Zoning plan
Preparing construction
Under construction
Opened

Illustration: Red Ant for Fellesprosjektet

Where?

Counties:: Vestland

Municipalities:

Bergen, Vaksdal

What?

Why?

National transport plan:: Mentioned in NTP 2025–2036
Project start:: Spring 2026
Expected opened:: 2039

More about the project

Combining road and railway safety for the biggest tunnel project in Norway. Construction starts in 2026.

The joint Project Arna-Stanghelle is an ambitious initiative that integrates both road and railway infrastructure. Construction is set to begin in 2026.

Behind the project is The Norwegian Public Roads Administration (NPRA) and Bane NOR, the state-owned company responsible for the national railway infrastructure.

This project encompasses a total of 80 kilometers of road and railway tunnels, junction ramp tubes, evacuation tunnels, and temporary crosscut tunnels, making it a true megaproject and a unique endeavour in Norway. Located on the western coast of Norway, near Bergen, it forms a crucial part of the main corridor between Oslo and Bergen.

The Joint Project Arna-Stanghelle has pioneered innovative solutions, including a closed system for depositing waste rock from the tunnels and a shared evacuation system for both road and rail tunnels.