The channel tunnel is, on average, 45m below the seabed. (1)
The ocean depth between Dover and Calais is, on average, 50m. (2)
Hence it can be guestimated that the tunnel is, on average, roughly 100m below sealevel for the undersea section of the tunnel.
(1) http://www.channeltunnel.co.uk/Faqs.asp
(2) http://www.worldatlas.com/aatlas/infopage/englishchannel.htm
Eurotunnel is the name of the company which owns and operates the Channel Tunnel, as well as other business interests.
At its lowest point, the Channel Tunnel is 75 metres below sea level.
The Holland tunnel is built under the Hudson River, which has an average depth of 35 feet, (10.6 mtrs).
93 feet
22 feet
1.6 miles
60 feet
The Holland Tunnel was named after Clifford Holland the man who was the designer of the Holland Tunnel. Clifford Holland had died before the Holland Tunnel was even finished.
About 7 miles to the Holland Tunnel.
no
The Holland Tunnel opened on November 13, 1927.
The Holland Tunnel was constructed in 1922 through 1927. Planning began in 1920.
Lincoln Tunnel, Holland Tunnel, Brooklyn Battery Tunnel.
The Hudson River has tunnels that run underneath it to link New York and New Jersey. One of these tunnels is called the Holland Tunnel.
Holland Tunnel
The Holland Tunnel and Robert Fulton are associated with the Hudson River.
The Holland Tunnel connects New York City with Jersey City, New Jersey.
The Holland Tunnel traverses the Hudson River and connects Manhattan to New Jersey. The Holland Tunnel traverses the water at Spring Street in Lower Manhattan. Canal Street also veers north diagonally to almost meet Spring Street at the entrance to the tunnel. So the tunnel is located at the almost-intersection of Canal and Spring Streets.
There are four tunnels connecting to Manhattan: the Lincoln Tunnel, Holland Tunnel, Brooklyn-Battery Tunnel, and Queens-Midtown Tunnel. The Lincoln and Holland Tunnels connect New Jersey to Manhattan. The Queens-Midtown Tunnel connects Queens to Manhattan, and the Brooklyn-Battery Tunnel connects Brooklyn to Manhattan.