Park Avenue Tunnel (railroad)
The Park Avenue Tunnel connects four tracks of the Metro-North Railroad from Grand Central Terminal at 42nd Street to 97th Street in the New York City borough of Manhattan. The tunnel portal rises to a full viaduct by 99th Street.
The New York and Harlem Railroad first opened a horsecar line on this route to Harlem station at 125th Street in 1837. The New York Central and Hudson River Railroad lowered the tracks into a tunnel from 59th Street to 96th Street during 1872 to 1876, concurrent with the construction of Grand Central Depot. However, as train traffic to Grand Central increased dramatically to the end of the 19th century, the operation of steam locomotives in the tunnel resulted in both an extremely unpleasant experience for riders and a dangerously low level of visibility for train engineers.:189
On the morning of January 8, 1902, an express train from White Plains missed a number of signals in the tunnel and plowed into a stopped train waiting to enter Grand Central, killing 15 people and injuring dozens more in the worst railroad accident in New York City history. The resulting public outcry led to calls for electrification of the line and replacement of the then-overcrowded Grand Central Depot.
Between 1903 and 1913, Grand Central Depot was demolished in phases and replaced with the current Beaux Arts-style Grand Central Terminal. As part of the project, the rail yard and the approach from 59th Street were placed underground and electrified. Electric locomotives were placed in regular passenger service in January 1907.:194-7 With the elimination of the noise and pollution from steam locomotives, this once undesirable section of Park Avenue and the land freed by the burial of the rail yard became prime New York City real estate. The idea to place the rail yard below Park Avenue and construct buildings above is credited to William J. Wilgus, the chief engineer of the New York Central and Hudson River Railroad.
 Abandoned stations
Along the tunnel are three former stations, located at 59th Street, 72nd Street and 86th Street, each of which had side platforms on the two outer tracks. These are now used for storage and emergency exits. Interestingly, while the 59th Street and 72nd Street stations had typical side platforms located on the outside of all four tracks (i.e. trains on the outer tracks opened their doors on the right), the 86th Street station has two platforms located in between the outside tracks and the center pair of tracks, almost creating island platforms. This is similar to the layout at 14th Street (IND Sixth Avenue Line), except the platforms are walled off from the center tracks, so that trains on the outer tracks opened their doors on the left, and trains on the inner tracks bypassed the station.
- City History Club of New York (1909). Historical Guide to the City of New York: Section IV--Murray Hill to Central Park. New York: F.A. Stokes Co. p. 117.
- Cudahy, Brian (2003). A Century of Subways: Celebrating 100 Years of New York's Underground Railways. New York: Fordham University Press. ISBN 978-0-8232-2293-3.
- Public Broadcasting System (2008). "American Experience: Grand Central." Television program transcript. Accessed 2011-04-02.
- Gray, Christopher (October 11, 1992). "Building Atop Railroad Yards; A 1902 Precedent for Trump's Plan". The New York Times. Retrieved 2009-08-22.
 Further reading
- Wilgus, William J. (1908). "The Electrification of the Suburban Zone of the New York Central and Hudson River Railroad in the Vicinity of New York City". Transactions of the American Society of Civil Engineers 61. Paper No. 1079.