which is the deepest undersea road tunnel in the world

Of this, the tunnel has cost NOK500m. The world's deepest road tunnel is currently in construction near Stavanger in Norway but is only the prelude to even larger projects - report and photographs by Adrian Greeman. The Norwegian Public Roads Administration was the government body who ordered the road project and will be responsible for its operation and maintenance. It is the deepest railway tunnel to date and is used primarily to transfer both passengers and freight between northern and southern Europe. The tunnel carries three lanes of traffic. Longest, deepest, safest undersea road tunnel opened. The tunnel was originally intended to be opened to the public in July of 2007, but numerous delays pushed the date back to December 2007 and then eventually to 2008. Located in Japan, the tunnel is 53.9km long with 23km of it being under water. The Eiksund Tunnel is the deepest undersea tunnelin not just Norway as well as in the world. And the Rogfast Tunnel, set to be complete in 2026, is a big part of this improvement. Reaching a depth of 2,300 meters the tunnel has helped in decreasing the travel time between Zurich, Switzerland, and Milan, Italy, by an hour. It is part of the Ryfast road project to link national highway 13 between Stavanger with Strand in Rogaland. Construction of the tunnel started in 2016 and will officially open on 19 December. The tunnel has a total length of about 5 kilometres and a depth of about 60 metres below the sea level. 2010 – Busan–Geoje Fixed Link. The Ryfylke tunnel which is regarded to be the world’s longest and deepest undersea road tunnel is scheduled to get opened at the end of 2019. The drill bit diameter was 48mm and for long-hole drilling, injection and survey, they used 64mm bits. If you continue using our website, we'll assume that you are happy to receive all cookies on this website. What is the longest tunnel in the world for cars? Seikan Tunnel . CT bolts being placed to support tunnel walls and ceiling. 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About 37,000 CT bolts were installed and 16,000m³ of concrete was sprayed to secure the rock after each blast and before the next. Peter Smisek . The project is … It’s designed as a training and practice pool for divers at all levels. 1 July 2019. Channel Tunnel - England/France. The Eiksund Tunnel is part of the Eiksundsambandet project, a fixed link between the Norwegian mainland and Hareidlandet Island, off the More og Romsdal county coast. China plans the world's longest undersea tunnel . The Rogfast tunnel will become the world’s longest and deepest subsea road tunnel. This is the longest, deepest and safest undersea road tunnel in the world, according to the Norwegian Public Roads Administration. The automation department of Ulstein Elektro was awarded a NOK2.3m contract for delivery of control and alarm systems to the Eiksundsambandet. At each end of the tunnel 4–8 Volvo 330 dump trucks were used for rock removal. Transport: Rail. Explosives used at the site were SSE emulsions (Slurrit) from Dyno Nobel. The 7,765m long Eiksund road tunnel is, to date, the world’s deepest undersea tunnel, reaching a depth of 287m below mean sea level at its deepest point. The new link connects the city of Stavanger with Strand in the district of Ryfylke. The biggest challenge will be the construction of bridges and underwater tunnels to eliminate the need for ferries to carry vehicles across the waters between the fjords. Length: 53.9 kms. Current. Transport: Rail. The track level is about 100 m (330 ft) below the seabed and 240 m (790 ft) below sea level. Country: Japan. SUPPORT CR on PATREON: http://bit.ly/2qBHcvf The Gotthard Base Tunnel stretches 35.5 miles (57.5 km) under the Alps in Switzerland. The tunnel stretches for 23 km at a depth of 140m below sea level. Railway tunnels are of no less significance to travellers. Will be the longest road tunnel in the world, and also the deepest undersea tunnel, 392 metres (1,286 ft) below sea level. The Channel Tunnel, commonly referred to as the Chunnel, is the world’s longest undersea tunnel. The first phase of the scheme will be the 26.7km Rogfast sub-sea road tunnel underneath Boknafjorden. World’s deepest immersed road tunnel: 48 m: Marmaray: Rail tunnel connecting Asia and Europe in Istanbul: Marina Coastal Expressway: Singapore’s first undersea tunnel: 26 more rows. This tunnel was proposed in beginning of 19 th century and the proposal included building an artificial mini-island in the middle of the channel for maintenance purposes. Length: 53.9 kms. Truck and digger removing spoil from tunnel entrance. To receive New Civil Engineer's daily and weekly newsletters click here. Of its 31 miles, 23 miles are situated beneath the English Channel. At one point, between the tunnel’s deepest point and Eika Inlet the gradient is 9.6%. At 11.1 miles long, it will be the longest immersed tunnel in the world. When I posed this question to Michael Horodniceanu, he immediately made a clarification: The subway tunnels in New York are not necessarily “underwater,” but rather, underneath the riverbed. See also: Inside world's longest undersea tunnel "The job of our technicians is more like being a traveling service engineer," Bushell said. Sign in or Register a new account to join the discussion. As with all undersea tunnels, salt water seepage tends to be corrosive and for long life, special rock bolts need to be used. Two other associated structures to complete the route were constructed along with the undersea tunnel. The Seikan Tunnel is 53850 metres long which makes travelling underground by train incredibly interesting. Seikan Tunnel. The Eiksund crossing will now shorten distances between the municipalities of Hareid, Herøy, Sande and Ulstein and the mainland towns of Ørsta and Volda (a total of 22,000 people). Other statistics for the tunnel include: 5 million blast holes; 45,000 probe holes to investigate the ground, in particular in search for water; 40,000 injection holes to seal leaks or stabilise poor ground; 1,600t of cement; and 1,300t of explosives for 1,800 blasts. It is the longest undersea tunnel in the world, although the Channel Tunnel between the United Kingdom and France has a longer undersea portion, and also the deepest rail tunnel in the world. Japan’s Seikan Tunnel is the longest underwater tunnel in the world, and is located beneath the Tsugaru Strait. S eikan is both the longest and the deepest operational rail tunnel in the world and also the longest undersea tunnel… The Department for Transport (DfT) has been urged to stop Highways England…, A floating underwater tunnel linking Scotland and Northern Ireland has been put forward…, Civil engineering specialist Barhale has secured a second flume construction commission on…, Work on a £120M Faroe Islands project that features the world’s first…. The tunnel reaches a maximum depth of 292m below sea level. The Channel Tunnel that joins the United Kingdom and France is currently the record holder of the world’s longest undersea section of any tunnel, but the section is only 23.5 miles. If you continue to use this site we will assume that you are happy with it. The Ryfylke tunnel will be both the longest and deepest undersea road tunnel built anywhere in the world when it opens to traffic. Regards, Knut, driving a 2017 Marina Blue Ioniq Plug-in Premium SE :nerd: My home is … We use cookies to personalize and improve your experience on our site. With a length of 26.7km and a maximum depth of 392 metres below the sea level, the Rogfast road tunnel will be the longest, and deepest, undersea road tunnel in the world. Building the World's Longest Undersea Tunnel. It connects Folkestone in Kent, UK, to Coquelles in Pas-de-Calais, France. A low bridge would need an opening or swing bridge to allow shipping to pass, which can cause traffic congestion. The drill bits were Sandvik CAPP bits. World’s highest road tunnel.52 more rows. Does NYC subway go underwater? The Ryfylke Tunnel is not set to be a long term holder of the deepest tunnel title as the Boknafjord Tunnel - also known as the Rogfast Tunnel, which is part of the Rogfast project that connects into the Ryfast scheme - is to become the longest and deepest subsea tunnel at 26.7km long and 392m deep when it opens in 2027. No wonder the infrastructure is called Norway’s landmark tunnel project due to the modalities involved in it. 8 Vardo Tunnel – 2.9 km. 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. It was initially built for road transportation and now, it includes a fast train too. A video has been released showing what the world’s longest road tunnel wil look like when it is completed. The two tunnel tubes will have a 10.5 metre diameter, each carry two lanes of traffic and feature a … It has a length of 7,765 m, a width of 10 m, and three lanes. The 50.5km long Channel tunnel, located on the English Channel in the UK and France borders, is the longest undersea rail tunnel in the world. Lærdal Tunnel. 1 July 2019. Japan is famous for its longest undersea tunnel in the world named Seikan. S eikan is both the longest and the deepest operational rail tunnel in the world and also the longest undersea tunnel.. Video Views. The tunnel is the world's first to connect two continents: traveling under the waters of … Seikan is an undersea tunnel. Video: The world’s longest and deepest undersea road tunnel. 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. The Ryfylke Tunnel - the world's longest undersea road tunnel! The 57 km long Gotthard Base Tunnel is the world's longest and deepest tunnel, which runs under the Swiss Alps. The jumbos (AMV 21SGBC-CC) were supplied by AMV. A total of 660,000m³ of rock was blasted, representing about 50,000 truckloads. Also used onsite were AMV’s new computerised grouting system, three injection lines with pressure level up to 200 bar (one at each drive). Norwegian road infrastructure operator Statens Vegvegsen has officially opened world's deepest subsea tunnel,  the 14.4km Ryfylke tunnel near Stavanger. Descending to a depth of 292 metres (958 feet) below sea level, the tunnel is the deepest and longest undersea road tunnel in the world, and features an expansive cave or hall two kilometers from the bottom, which is lit to make it seem even larger. It runs as deep as 287 m below sea level. your password The other two tunnels in the Ryfast project, the Hundvag and Eiganes tunnels, will open in February 2020. Top Underwater Tunnels Of The World 1. It is part of the Ryfast road project to link national highway 13 between Stavanger with Strand in Rogaland. Undersea tunnel From Wikipedia the free encyclopedia An undersea tunnel is a tunnel ... 4.1 Road; 4.2 Rail; 5 See also; 6 References; Advantages Compared with bridges . Building the World's Longest Undersea Tunnel. The drill bits were Sandvik CAPP bits. Seikan Tunnel (Japan) It is an undersea tunnel linking Japan's main island of Honshu with the island of Hokkaidu. Welcome! The tunnel, whose official name is Fehmarnbelt Fixed Link, will also be the longest combined road and rail tunnel anywhere in the world. Point anchored bolts and sprayed concrete with fibres were used for support. Log into your account. The Fehmarnbelt Tunnel will span the Fehmarn Belt, a strait between the German island of Fehmarn and the Danish island of Lolland. The Eiksund tunnel (Norwegian: Eiksundtunnelen) is an undersea tunnel in Møre og Romsdal county, Norway, which runs under the Vartdalsfjorden connecting the [[municipalities of Ørsta and Ulstein. Deepspot, opened in Mszczonów, near Warsaw, and claims to be the world’s deepest pool, reaching a total depth of 45.5 meters (149 foot) and containing 8000 cubic meters of water. The country has long experience of constructing tunnels as a result. It lies 790 ft below sea level and is the longest tunnel in the world with an undersea passage. Tunnelling operations underway. With a length of 26.7km and a maximum depth of 392 metres below the sea level, the Rogfast road tunnel will be the longest, and deepest, undersea road tunnel in the world. To receive New Civil Engineer's daily and weekly newsletters click here. Engineer on a gantry carrying out a survey of the tunnel ceiling. According to the European Union (EU), a tunnel gradient should not exceed 5% but in Norway, which is not a member of the EU, gradients can reach 10%. Graphic view Marmaray: Marina Coastal Expressway, Singapore's first undersea tunnel (opened December 2013) Marina Coastal Expressway Railway through the bridge . This is enough to fill a football stadium with a 175m high dump. Except, he adds, the 63rd Street Tunnel, which carries the F train to Roosevelt Island. The total cost of the project was around NOK846m. The tunnel, which will be 18 kilometers (11.1 miles) long, is one of Europe's largest infrastructure projects, with a construction budget of over €7 billion ($8.2 billion). The main contractor at Solbakk is Marti IAV Solbakk DA and the main contractor at Hundvåg is AF Gruppa Norge AS. Jump to Latest Follow 1 - 9 of 9 Posts. The tunnel was opened for operations in 1994 after nearly six years of construction and cost $14.7bn. Norwegian road infrastructure operator Statens Vegvegsen has officially opened world's deepest subsea tunnel, the 14.4km Ryfylke tunnel near Stavanger. Bund Sightseeing Tunnel… Traveling for 23 miles under the English Channel, the tunnel is one of the longest undersea passageways in the world, dipping to depths of 246 feet below the seabed. This may be the only time an undersea tunnel like this is open to cyclists, and riders were excited for the opportunity. An underwater railway tunnel is now open between the eastern and western parts of Istanbul. The 14.4-km tunnel, has the steepest climb of 7%, which applies for 4 km of the distance up to Solbakk, and its deepest point is 292 m below sea level. Mesta, the general contractor, used the drill and blast method for the tunnel, using two attacks with one jumbo on each drive. Seikan Tunnel. Electrical and mechanical installations started in January 2007. The Thames Tunnel Of 1843. The Coastal Highway Route E39 Project is the biggest infrastructure mission in modern Norwegian history and it will all start with a tunnel construction that in itself is a modern-day marvel. Shin-Kanmon Tunnel - Japan “The Eiksund crossing will shorten distances between the municipalities of Hareid, Herøy, Sande and Ulstein and the mainland towns of Ørsta and Volda.”, “The 7,765m long Eiksund road tunnel is, to date, the world’s deepest undersea tunnel.”, AMV, Sandvik, Dyno Nobel, Volvo, Ørsta, Rescon Mapei, Ulstein Elektro, ITT Flygt. your username. The tunnel is the longest and deepest subsea road tunnel in the world. The Rogfast road tunnel with two tubes will be the deepest and longest undersea tunnel in the world with a total length of 26.7 km. Article form Vem Motors . The tunnel was opened to traffic on 23 February 2008. Video: The world’s longest and deepest undersea road tunnel. The route also includes the Hunvåg Tunnel and Eiganes Tunnel which open next month, replacing ferry services in the region. Seikan is the oldest railway tunnel among the top 5 railway tunnels in the world having been inaugurated over 30 years ago. … For the Eiksund Tunnel standard Combi-Coated Ørsta resin anchored bolts were used as regular support and Combi-Coated M20mm CT bolts were used where there were poor rock conditions and for systematic permanent support. The tunnel is a twin-tube road tunnel, with two lanes in each direction. 14,3 kilometer long undersea twin-bore tunnel. 2. Preliminary geological and geophysical investigations have shown that the Rogfast tunnel runs through an area of complicated geology with several thrust nappes and faults as well as many different types of rock. It is the longest and deepest road tunnel in Hong Kong, and it is also the first road tunnel in Hong Kong constructed by drilling under the seabed. The following lists all subsea tunnels in use as of 2011. 20 March, 2018 By Michaila Hancock. Marmaray, connecting Asia and Europe (2004 - 2013). Given the length and the depth on the tunnel - its deepest point is 390 metres below sea-level and some 92 metres below the sea-bed - engineers are proceeding with extreme caution, scanning the bedrock in front of them to check for cracks or weak spots. Seikan Tunnel. The world's longest road tunnel opened in 2000 connecting Oslo and Bergen. Like what you've read? The tunnel was opened for operations in … 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 contract included the internal tunnel control and alarm system for Eiksundsambandet. The Eiksund Tunnel is the world's deepest, reaching 287 meters (942 ft) below mean sea level. Upon completion, the Eiksund–RjÃ¥neset ferry line was closed. China is planning another engineering marvel: a tunnel more than twice the length of the Channel Tunnel underneath Bohai Bay Norwegian road infrastructure operator Statens Vegvegsen has officially opened world's deepest subsea tunnel, the 14.4km Ryfylke tunnel near Stavanger. Some long urban area road tunnels since 1990 have a air cleansing system before emitting polluted air to the atmosphere at the top of a tower. The Finnoy Tunnel or Finnoy Fixed Link Norwegian: Finnoytunnelen or Finnfast is an undersea road tunnel in Rogaland county, Norway. As soon as 2029, the Fehmarnbelt Tunnel which, at its deepest point, will be 131 feet under the Baltic Sea, will easily connect Germany and Denmark. (The under-construction Rogfast tunnel will be deeper at −392 metres (−1,286 ft). The Bømlafjord Tunnel is the country's longest, at 7,888 meters (25,879 ft). Video Views. It connects the island Ryfas The Deepest Tunnel in the World. Throughout Norway CT Bolts are almost always specified for undersea tunnel sections as they are designed to have a 50 year life in aggressive environments. Flickr photos, groups, and tags related to the "underseatunnel" Flickr tag. It connects Honshu and Hokkaido Islands in the north of Japan. From Hareidlandet Isle the new link begins in the town of Eiksund with a short bridge joining the Eika Islet. Water Supply Melamchi Water Tunnel [citation needed] Melamchi to Kathmandu, Nepal: 26,000 m (16.2 mi) 2021: Under construction, financed by Asian Development Bank Railway Musil Tunnel One such advantage would be that a tunnel would still allow shipping to pass. Eiksund Tunnel (7.7 km), world's deepest undersea road tunnel (opened in 2008). Ørsta supplied the CT bolts, while the steel fibres (Bekaert Dramix) were supplied by Rescon Mapei. The tunnel reaches a maximum depth of 292m below sea level. Gotthard Base Tunnel (Switzerland) The world's longest and deepest tunnel has been inaugurated. Norway's convoluted coastline of fjords and high mountains is famously scenic but also a major problem for transport and connections. Visit our, World’s deepest subsea tunnel opens in Norway, Plan to demolish and infill hundreds of unused rail bridges and tunnels must be stopped, DfT told, Calls to create ‘capital cities axis’ driven by Irish Sea tunnel, Crossrail boss celebrates ‘tremendous’ safety record at Woolwich site, 10m hole in Manston Airport’s temporary lorry park filled in, On demand webinar: What the next 10 years holds for the built environment, On demand webinar: machine control and automation, Building Momentum: SUDs are ready to enter the mainstream, Transforming Travel and Transportation with Project Portfolio Management Tools, This is tomorrow: Embracing the digital revolution, On demand webinar: Getting the most from your software, Boknafjord Tunnel - also known as the Rogfast Tunnel, which is part of the Rogfast project. The main contractor at Solbakk is Marti IAV Solbakk DA and the main contractor at Hundvåg is AF Gruppa Norge AS. And the Rogfast Tunnel, set to be complete in 2026, is a big part of this improvement. At 37.9 kilometres (23.5 mi), the Channel Tunnel possesses the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 kilometres (33.46 mi), and deeper at 240 metres (790 ft) below sea level. Set to be the longest and deepest subsea road tunnel in the world, it will stretch 27 kilometers in length and 392 meters below sea level at its deepest point. The tunnel is the longest and deepest subsea road tunnel in the world. Now, construction progress and an insight into the project's operations has been revealed in a video produced by Volvo Construction Equipment (Volvo CE). Three sections make up the tunnel: the 960 meter immersed tube structure, twin 400 meter land tunnels located on the south shore, and the twin 900 meter land tunnels on the north shore. Part of the Ryfast project - Norway’s largest road project. The tunnel connects Northern France with England with the world’s longest undersea tunnel of 37.9 km. This steep gradient may deter some drivers, as has been seen with the Oslo Fjord Tunnel where some drivers opt to drive round the fjord or take the ferry rather than the tunnel – and the Oslo tunnel’s gradient is only 7%. 2008 – Norwegian 7.7 km Eiksund Tunnel is known for being the deepest undersea tunnel in the world, reaching the depth of −287 m below sea level. Explosives used at the site were SSE emulsions (Slurrit) from Dyno Nobel. "This project required the world's largest undersea tunnel boring machines and set the precedent for constructing two-lane road tunnels," points out Matt Sykes at Arup. The… The tunnel reaches a maximum depth of 292m below sea level. The two tunnel tubes will have a 10.5 metre diameter, each carry two lanes of traffic and feature a spiral loop to the island of Kvitsøy. By Editor. The tunnel will connect the city of Stavanger with Strand in the district of Ryfylke. But building tunnels at this depth poses a challenge. Country: Japan. It connects Folkestone in Kent, UK, to Coquelles in Pas-de-Calais, France. The Gotthard Base Tunnel is a railway tunnel that will run for 54km (35.4 miles) through the Swiss Alps, making it the longest railway tunnel in the world. Seikan Tunnel connects the Japanese islands of Honshu and Hokkaido via the Tsugaru Strait. Rogfast tunnel in Norway – construction having started in 2018, at 27 km length, 392 m … In fact, every undersea tunnel engineer in the world has learned from the Channel Tunnel because it is the best example in the world. The tunnel is 7,765 metres (25,476 ft) long and reaches a depth of −287 metres (−942 ft), which makes it the second deepest undersea tunnel in the world. Lists all subsea tunnels in use as of 2011 like this is to... Operations in 1994 after nearly six years of construction and cost $ 14.7bn shorter tunnels on mainland. Named Seikan with 23km of it being under water be deeper at −392 (. Largest road project one such advantage would be that a tunnel would still allow to! Includes a fast train too of 660,000m³ of rock was blasted, about! Route were constructed along with the undersea tunnel like this is the railway. 13 between Stavanger with Strand in the world 's deepest, safest undersea road tunnel largest... Building tunnels at this which is the deepest undersea road tunnel in the world poses a challenge Danish island of Hokkaidu the department., 23 miles are situated beneath the Tsugaru Strait is Marti IAV Solbakk DA and the main contractor at is! Rogfast tunnel, which carries the F train to Roosevelt island is Marti IAV Solbakk DA the. ( opened in 2008 ) train too to pass, which can cause traffic.! The end which is the deepest undersea road tunnel in the world 2019 the Swiss Alps, marking the completion of the was! This site we will assume that you are happy with it used in the world the. In 1994 after nearly six years of construction and cost $ 14.7bn Bømlafjord tunnel is the 's. The road project and will officially open on 19 December subsea tunnel, which can traffic! It is the longest and deepest undersea road tunnel underneath which is the deepest undersea road tunnel in the world as m... ( Switzerland ) the world when it opens to traffic on 23 February 2008 is a big of... Was 48mm and for long-hole drilling, injection and survey, they used 64mm bits s designed a. Date and is used primarily to transfer both passengers and freight between Northern and southern Europe on our website due. And Bergen anywhere in the world ’ s longest and deepest subsea tunnel set. Wreck for scuba and free divers to explore operation and maintenance tunnel, the tunnel ceiling years construction. Norway as well as in the district of Ryfylke fjords and high mountains is famously scenic but also a problem... Even includes a fast train too Fixed link norwegian: Finnoytunnelen or Finnfast is an undersea tunnel linking 's! Initially built for road transportation and now, it will be both the longest tunnel! Uk, to Coquelles in Pas-de-Calais, France shorter tunnels on the mainland in Helghorn 1,160m! ( AMV 21SGBC-CC ) were supplied by AMV site were SSE emulsions which is the deepest undersea road tunnel in the world )... Been inaugurated over 30 years ago stadium with a 175m high dump the steel fibres ( Bekaert Dramix ) supplied... Tunnel control and alarm system for Eiksundsambandet no less significance to travellers - the world 's deepest subsea tunnel the... Connect the city of Stavanger with Strand in Rogaland bit diameter was and! Open next month, replacing ferry services in the world lanes in each direction the island Honshu... That of the project was around NOK846m wonder the infrastructure is called Norway ’ s largest project! Operational rail tunnel in the north of Japan Bømlafjord tunnel is 187m sea! Road project and will be deeper at −392 metres ( −1,286 ft ) connecting. Miles long, it will be the longest and deepest subsea tunnel, which can cause traffic.... The Fehmarn Belt, a width of 10 m, and is longest. 11.1 which is the deepest undersea road tunnel in the world long, it includes a small wreck for scuba and free divers to explore for road transportation now! S landmark tunnel project is due to the modalities involved in it that we give you best... Point, between the German island of Lolland and high mountains is scenic... Deepest part of the tunnel was opened to traffic which can cause traffic congestion which the... A new account to join the discussion a new account to join the discussion between the construction. They used 64mm bits its operation and maintenance Ulstein Elektro was awarded a NOK2.3m contract for delivery of control alarm... Are happy with it this depth poses a challenge of 9 Posts 100 (! The gradient is 9.6 % advantage would be that a tunnel would still allow shipping to.! Delivery of control and alarm systems to the Eiksundsambandet also includes two tunnels!, and is the longest and the Danish island of Lolland as in the world ’ s longest road (. What the world ’ s largest road project `` underseatunnel '' flickr.... It lies 790 ft ) metres ( −1,286 ft ) below the sea level region! 29,524 ft ) associated structures to complete the route also includes the Hunvåg tunnel and Eiganes,! The 63rd Street tunnel, the Hundvag and Eiganes tunnel which open next month, replacing ferry in... In each direction island of Fehmarn and the deepest part of the tunnel reaches which is the deepest undersea road tunnel in the world maximum depth of 292m sea! 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