Tromsø tunnels rehabilitation

• Main client: Bertelsen Garpestad / Troms og Finnmark fylkeskommune 
• Contractor: Metrostav Norge AS
• Construction period: 09/2023 – 02/2025
• Price: 110 797 156 NOK eks. mva

Project Description:  

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. 

• 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