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Holland Tunnel

Holland Tunnel
Haer hollandtunnel.jpg
Manhattan entrance to tunnel, 1985
Overview
Official name Clifford Milburn Holland Tunnel
Location Jersey City, NJLower Manhattan, New York City, NY, US
Route Route 139 (NJ side)
I‑78 (full span)
Crosses Hudson River
Operation
Opened November 13, 1927; 89 years ago (1927-11-13)
Operator Port Authority of New York and New Jersey
Traffic 93,356 (2010 AADT)
Toll (eastbound only) As of December 6, 2015; Cars $15.00 for cash, $12.50 for Peak (E-ZPass), $10.50 for Off-peak (E-ZPass)
Technical
Length 8,558 feet (2,608.5 m) (westbound)
8,371 feet (2,551.5 m) (eastbound)
No. of lanes 4
Tunnel clearance 12.5 feet (3.81 m)
Width ?
Depth of tunnel below water level 93 feet (28.3 m) below MHW
Depth of shipping channel above ?
Route map
Route map of the Holland Tunnel
Holland Tunnel
An eastbound trip through the tunnel
Location Jersey City, New Jersey and Manhattan, New York City
Built 1920
Architect Clifford Holland
NRHP Reference # 93001619
Significant dates
Added to NRHP November 4, 1993
Designated NHL November 4, 1993

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.

The 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, after his untimely death in October 27 1924, before the tunnel was approached. The innovative ventilation system was designed by Ole Singstad, who oversaw completion of tunnel's construction.

Begun in 1920 and completed in 1927, the tunnel is named after Clifford Milburn Holland (1883–1924), Chief Engineer on the project, who died before it was completed. Tunnel designer Ole Singstad finished Holland's work. The tunnel is first mechanically ventilated underwater vehicular tunnel in the world. Eighty-four fans, in four ventilation buildings, create a floor to ceiling air flow across the roadway at regular intervals, via systems of ducts beneath and above the roadway. The fans can completely change the air inside the tunnel every 90 seconds. A forced ventilation system is essential because of the poisonous carbon monoxide component of automobile exhaust, which constituted a far greater percentage of exhaust gases before catalytic converters became prevalent.


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Wikipedia

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