The deepest and longest subsea road tunnel
17 hours ago
- #infrastructure
- #Norway
- #engineering
- Rogfast is set to become the world's longest and deepest subsea road tunnel in Norway, stretching 26.7 kilometers and reaching 390 meters below sea level.
- The tunnel uses the drill-and-blast method, involving explosives to advance about 5-6 meters per blast, and requires complex grouting techniques to manage water leakage.
- Construction involves multiple teams from Skanska and Implenia/Stangeland, using daily laser scans to ensure precision, with completion targeted for 2033 to reduce travel time between Stavanger and Bergen.
- Safety measures include rescue chambers with oxygen supplies, personal tracking devices, and extensive protocols for hazards like fires, toxic air, and rock instability.
- Environmental concerns include managing 8.5 million cubic meters of excavated rock and protecting marine life like lobsters and cod from water pollution during construction.
- The project features innovative elements like undersea roundabouts and ventilation shafts from Kvitsøy, and aims to combat driver monotony with artistic lighting installations.