What tunnel runs under the Hudson River and has a ventilation system innovated by Ole Knutsen Singstad?
Holland Tunnel The Holland Tunnel is a highway tunnel under the Hudson River between Manhattan in New York City and Jersey City, New Jersey. Its two tubes carry eastbound and westbound Interstate 78. In New Jersey, it is also designated NJ 139. An integral conduit within the New York Metropolitan Area, it opened in 1927 as the first of two vehicular tunnels under the river, the other being the Lincoln Tunnel. Both are operated by the Port Authority of New York and New Jersey.
Nyborg Tunnel The Nyborg Tunnel is a proposed 8 km long road tunnel between Åsane and Klauvaneset in the city-municipality of Bergen in Hordaland county, Norway. If built, it would extend the four-lane motorway section of European route E39 (E39) from Åsane northwards to the Nordhordland Bridge. The tunnel is presumed financed with a five-year toll collection at the bridge while the tunnel is being built, and then with a toll on the tunnel for 15 years. It is estimated to cost 1,900 million kr . Construction is planned to start in 2014 . The tunnel would branch off the current E39 highway at Åsane, just west of the IKEA store, and it would head northwards. It would exit the tunnel just south of the Nordhordland Bridge.