Editing New York Tunnel Extension (section)

{{short description|Railroad tunnels in New Jersey and New York}}
{{Use mdy dates|date=October 2017}}
{{Infobox rail line
| name        = New York Tunnel Extension
| color       = 
| logo        = 
| logo_width  = 
| logo_alt    = 
| image       = Hackensack portalsimg014.jpg
| image_width =
| image_alt   = 
| caption     = North Bergen portal of the tunnels
| type        = [[Heavy rail]], [[Commuter rail]]
| system      = Originally [[Pennsylvania Railroad]]<br/>now [[Amtrak]], [[New Jersey Transit]], [[Long Island Rail Road]]. 
| status      = In operation
| locale      = [[New York City]]<br/>[[Hudson County, New Jersey]]
| start       = 
| end         = 
| stations    = 
| routes      = 
| daily_ridership   = 
| open        = 1910
| close       = 
| owner       = [[Amtrak]]
| operator    = 
| character   =
| depot       =
| stock       =
| linelength  = {{convert|44|mi|km}} (total main line trackage) <!-- Couder, p. 76 -->
| tracklength = 
| tracks     =
| gauge       = {{RailGauge|sg|al=on}}
| electrification          = 650 V DC [[third rail]] (1910–1933). 11,000 V AC [[overhead lines]] (1933-present)
| speed       =
| elevation   =
| map         = [[File:NY Tunnel Extension & Connections PRR 1912.jpg|250px]]
| map_name    = 
| map_state   = show
}}

The '''New York Tunnel Extension''' (also '''New York Improvement and Tunnel Extension''') is a combination of railroad tunnels and approaches from [[New Jersey]] and [[Long Island]] to [[Pennsylvania Station (New York City)|Pennsylvania Station]] in [[Midtown Manhattan]].

It was built by the [[Pennsylvania Railroad]] (PRR) at the beginning of the 20th century to improve railroad access throughout the greater [[New York City]] area,<ref>{{Cite book|last1=American Society of Civil Engineers.|url=https://catalog.hathitrust.org/Record/100329329|title=The New York tunnel extension of the Pennsylvania Railroad; station construction, road, track, yard equipment, electric traction, and locomotives|last2=Gibbs|first2=George.|date=1910|location=New York}}</ref> and led to the line's then-new passenger facility, [[Pennsylvania Station (1910–1963)|Pennsylvania Station]].