- Client: Troms og Finnmark fylkeskommune
- Main contractor: Bertelsen & Garpestad AS
- Contractor: Metrostav Norge AS
- Construction period: 09/2023 – 04/2025
- Price: 110 797 156 NOK excl. VAT
Tromsø tunnels rehabilitation
The project involves the reconstruction of the tunnel complex in Tromsø, including the widening of the Mellom tunnel to four lanes and the excavation of eight new technical chambers, along with the installation of water and frost insulation.
Basic information
Project characteristics
The project involves the reconstruction of the city tunnel complex in Tromsø, which consists of five tunnels: Breivika, Hansjordnes, Sentrumstangenten, Mellom and Langnes tunnel.
The project is divided into two phases, with no traffic in the tunnels during the upgrade.
Driving includes the excavation of 8 new technical rooms, expansion of existing rooms, re-excavation of the roundabouts and expansion of the Mellomtunnel from 2-lane to 4-lane. The work also includes additional bolting and shotcreting in the existing tunnels.
Water and frost protection is being installed in new or expanded spaces and other areas in existing tunnels.
Project data
47 000 m3
Excavated volume:
3 900 m3
Shotcrete:
4 840 pcs
Rockbolts:
27 750 m2
Water and frost insulation:
Challenges / Specifics of the project
- Climate conditions
- Non-continuous work – split into 2 phases with interruptions
- Long transport distances for mobilisation/demobilization
- Reconstruction in an urban environment in partial operation
Gallery
Selection of our references
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