As Norway improves it's road system there are more opening each year. These are 300mm thick curved units 3.7m high and 5m long. The first-of-its kind structure will be made up of two 1,200 meter (4,000ft) curved concrete tubes, floating up to 30 meters (100ft) below the surface. It also creates less noise than traffic on a bridge would. For extra stability, the bridge-tunnel may also be bolted to the bedrock below. Fjords may be gorgeous, but they're also a huge inconvenience.Norway — that Scandinavian haven dotted with mountains and series of narrow sea inlets called fjords — has a major problem: It’s nearly impossible to cross some terrain. Norwegian road infrastructure operator Statens Vegvegsen has officially opened world's deepest subsea tunnel,  the 14.4km Ryfylke tunnel near Stavanger.The tunnel reaches a maximum depth of 292m below sea level.It is part of the Ryfast road project to link national highway 13 between Stavanger with Strand in Rogaland. Bridges aren’t an option in a country famous for its Arctic freeze, and underwater tunnels are also out since the country’s got a system of deep ravines that can extend for as long as a mile.So Norway’s figured out a solution that’s making suspension bridges look ultra last century: the country’s Public Roads Administration has hatched a $25 billion plan to construct the world’s first submerged floating bridge.Until now, the typical Nordic method of crossing a fjord has been by ferry. We use cookies to personalize and improve your experience on our site. Share: Learn More Gorsa Bridge They are held slightly away from the tunnel wall with rock bolt fixings. The route also includes the Hunvåg Tunnel and Eiganes Tunnel which open next month, replacing ferry services in the region.Work on the project started in 2014 with contractor AF Gruppen achieving breakthrough on the first bore in autumn 2017 and joint venture contractors Marti and IAV breaking through on the second bore in early 2018.Speaking at the tunnel opening, Rogaland County deputy mayor Arne Bergsvåg said that it had taken 40 years for the concept for the tunnel to be realised.The previous holder of the deepest subsea tunnel was Eiksund Tunnel below the Vartdalsfjorden in Norway, which reaches 287m below sea level and was opened in 2008.The Ryfylke Tunnel is not set to be a long term holder of the deepest tunnel title as the A helicopter has been used to repair a historic Victorian railway tunnel…Camden resident Hero Granger-Taylor has filed an application for permission to appeal…Overhead line equipment has been installed as part of work to reopen…A High Court judge has dismissed a resident’s application for a judicial… Sixty per cent of Norway’s export goods are produced on the west coast, so an efficient and predictable transport system will be a great benefit for the national economy. The tunnel would shorten the trip to just over 10 hours. Map of Norwegian tunnels . On 12 June 2000, two weeks before the dedication, 79,871 runners competed in Broloppet, a half marathon from Amager, Denmark, to Skåne, Sweden. The previous holder of the deepest subsea tunnel was Eiksund Tunnel below the Vartdalsfjorden in Norway, which … Norway has begun work on its €1.8bn Rogfast tunnel, the longest and deepest undersea road tunnel ever built, despite the last minute withdrawal of the local authority, a main financial backer of the scheme. These suspension tunnels would also drastically increase citizens access to emergency services.