Construction of the Holland Tunnel began on October 12, 1920 that runs between New York, NY, and Jersey City, NJ, USA, beneath the Hudson River. The tunnel named for the chief engineer, Clifford Milburn Holland consisted of two tubes 9,250 feet (2,819 meters) long, of which 5,480 feet (1,670 meters) passing under the river and designed to accommodate 1,900 motor vehicles an hour. The first ventilation system designed to accommodate the exhaust of motor vehicles exchanged air 42 times an hour. The tunnel opened on November 12, 1927, seeing 20,000 people walk through and vehicular traffic began the next day.

Date:
      November 12, 1927
Name(s):
      Clifford Milburn Holland
Occupation:
      chief engineer
Location:
      New York, NY, USA

Additional Information:

• Holland Tunnel – Wikipedia
  The Holland Tunnel was originally known as the Hudson River Vehicular Tunnel or the Canal Street Tunnel. It was renamed the Holland Tunnel in memory of Clifford Milburn Holland, the chief engineer, following his sudden death in 1924 before the tunnel was opened.
• Holland Tunnel | tunnel, New Jersey-New York, United States …
  Holland Tunnel. tunnel, New Jersey-New York, United States. Written By: The Editors of Encyclopaedia Britannica. See Article History. Holland Tunnel, twin-tube …
• History of the Holland Tunnel – Port Authority of NY & NJ
  The first Hudson River vehicular crossing, the Holland Tunnel connects Canal Street in Manhattan with 12th and 14th streets in Jersey City, NJ, and is considered …
• History and Facts about the Holland Tunnel – Plaza College
  Dec 2, 2011 – The Holland Tunnel has 9 toll lanes and has 3.1 million ceiling tiles and 2.9 million wall tiles! The maximum depth from mean high water to …
• How Was the Holland Tunnel Built? – New-York Historical …
  The Holland Tunnel was built (1920-1924) by pneumatically pushing cylindrical shields through the river bottom. The shields not only dug through mud but also …