- Main client: Nye Veier
- Client: Eiffage
- Contractor: Metrostav Norge AS
- Construction period: 01/2023 – 08/2024
- Price: 436 000 627 NOK excluding VAT, ca 959,2 mil. CZK
E18 Langangen-Rugtvedt, Grenland tunnel
The Grenland Tunnel, part of the E18 Langangen-Rugtvedt project, is 5.2 km long and serves as a bypass of city of Porsgrunn. Metrostav Norge AS is excavating two tunnels from the Kjørholt and Herregårdsbekken portals.
Basic information
Project characteristics
The Grenland tunnel is a part of the E18 Langangen-Rugtvedt project, which is 17 kilometres long and includes a 4-lane highway, bridges, and tunnels. The project constitutes a bypass around the city of Porsgrunn, on the E18 highway between Oslo and Kristiansand. The Grenland tunnel itself has a total length of 5,2 km and is being excavated using the Kjørholt portal in the south, the Herregårdsbekken portal in the north, and two access ramps approximately in the middle of the tunnel.
Metrostav Norge AS is excavating a part of the double-tube Grenland tunnel. From the Kjørholt portal, the excavated length is 2x 1,7 km, and from the Herregårdsbekken portal, it is 2x 1,4 km.
Project data
4 tunnel faces (in total 6 164 m)
Tunnel:
T10,5 cca 80 m2
Tunnel profile:
517 097 m3
Excavated volume:
19 100 m3
Shotcrete:
31 100 pcs
Rockbolts:
1 600 000 kg
Grouting:
Challenges / Specifics of the project
- High requirements for work and environmental safety, and quality
- An extensive project
- Coordination with the contractors of other sections of the tunnel
- Predicted need for extensive grouting
Gallery
Selection of our references
Fámjin tunnel, Faroe Islands
The project involves the excavation of a 1200 meter long tunnel and the construction of a road to the village of Fámjin, which Metrostav Norge...
More information
New metro line Akalla-Barkarby, Sweden
Project Järfällatunneln represents extension of blue subway line on the northwestern suburbs of Stockholm. Metrostav Norge AS participated on the excavation of track tunnels, cross...
More information
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...
More information