Harlem River Lift Bridge
Harlem River Lift Bridge
|Carries||4 tracks of the Metro-North Railroad|
|Locale||Manhattan and the Bronx in New York City|
|Maintained by||Metropolitan Transportation Authority|
|Design||Vertical lift bridge|
|Longest span||340 ft (100 m)|
|Clearance below||25 ft (7.6 m). (closed) and 135 ft (41 m). (open)|
|Opened||1956 (replacing 1897 bridge)|
The Harlem River Lift Bridge (also known as the Park Avenue Bridge) is a vertical lift bridge carrying the Metro-North Railroad's Hudson Line, Harlem Line, and New Haven Line across the Harlem River between the boroughs of Manhattan and the Bronx in New York City. The average weekday ridership on the lines is 265,000.
The first bridge on this site was constructed by the New York and Harlem Railroad in 1841. It was composed of four 90-foot (27 m)-long box truss spans, three of which were fixed iron spans, while the remaining span was a wooden swing span. In the closed position, the bridge had a clearance of only seven feet above mean high water. Masonry piers supported the four box-truss spans. In 1867, the wooden drawbridge was replaced with an iron one that gave a clearance of 50 feet. By the 1880s, the bridge was crossed by more than 200 trains a day.
Second and third bridges
The 1867 bridge was soon made obsolete by heavy traffic and dredging of the Harlem River Ship Canal. In 1888, the United States Department of War began work on the Harlem River to allow for unrestricted shipping activity between the Hudson River and the East River and through the new Harlem River Ship Canal at 225th Street. The New York Central was opposed to the project as the increase in river traffic would interfere with its rail line, which was only 8 feet (2.4 m) above the water. In 1890, the New York and Northern Railway, a competitor of the New York Central which operated freight traffic to the Bronx shore which relied upon barges to ship its freight, complained to the Department of War about delays to its traffic due to the New York Central's low bridge.
To remedy the situation, the Central could have raised the bridge to 24 feet (7.3 m) above the water to satisfy the Department of War, allowing most vessels to cross under the bridge, for $300,000 or replaced it with a tunnel to satisfy the Harlem community for $3 million. The railroad opted to raise the bridge, which was the only four-track drawbridge in the country at the time. Alfred P. Boller worked with the railroad to create the new four-tracked swing bridge. However, due to political pressure, it had to raise the grade of its line north of 115th Street on a viaduct, raising the project's cost significantly. In 1892, a law was passed establishing the Board of Park Avenue Improvement, and under the terms of the law, New York City was to pay for half of the project, with the remainder paid for by the New York Central.
The new bridge was to be 400 feet (120 m)-long and was built for about $500,000 by the King Bridge Company. The new bridge was to be 17 feet (5.2 m) higher than the old bridge, as mandated by the Federal Government, making it 24 feet (7.3 m) above the water. The Park Avenue Line's grade had to be raised to allow it to reach the higher bridge, and as a result, a new four-track steel viaduct was built between 132nd Street and 106th Street.
During the course of construction, trains were to run over a temporary wooden structure along with a temporary two-track wooden drawbridge. The cost of the entire project was to be $2 million. At the time, construction was expected to begin on September 1, 1893. The work was divided into four sections. The bridge's design was underway in 1894, and in February of that year, the project was expected to be completed in December 1895. Service continued to operate while the complex work proceeded through a procedure involving the installation of temporary wooden trestles, trusses, and the installation of columns.
On February 15, 1897, trains on the Harlem Division started running over the new drawbridge over the Harlem River and the elevated structure connecting to it.: 25  The Department of War ordered that the bridge cannot be opened during peak hours, between 7 and 10 a.m. and 4 and 7 p.m.
Between 1954 and 1956, the New York Central Railroad built a fourth rail bridge on this site, this time a vertical-lift bridge, to replace the 1897 bridge. The new bridge opened in 1956. The four-track bridge remains in use today and consists of two parallel double-track spans, 340 feet (100 m) long. It has 25 feet (7.6 m) of clearance when closed and 135 feet (41 m) when open. During the 1960s, the bridge came under the ownership of several different companies, including Penn Central Railroad. Metro-North operates it, referring to it as the Harlem River Lift Bridge.
- Barron, James (November 14, 2014). "Lift Bridge for Metro-North Trains Is Getting Big Repairs". The New York Times. Retrieved November 14, 2014.
- Commuter Rail Transit Ridership Report First Quarter 2010, p. 5 Archived 2010-07-04 at the Wayback Machine, American Public Transportation Association, June 1, 2010. Accessed June 27, 2010.
- Gray, Christopher (February 19, 1995). "Streetscapes/The Park Avenue Railroad Viaduct; A $120 Million Renovation for an 1897 Behemoth". The New York Times. ISSN 0362-4331. Retrieved January 1, 2019.
- Gray, Christopher (September 18, 1988). "Streetscapes: The 125th Street Station; Metro-North Plans New Makeup, Not Plastic Surgery, for a Beauty". The New York Times. ISSN 0362-4331. Retrieved December 31, 2018.
- "Central Won't Pay Up. Trouble Between The Railroad and the Park Avenue Commissioners Over Laborer's Bills". New York Journal and Advertiser. August 14, 1897. Retrieved December 31, 2018.
- "The Park Avenue Improvement In New York City". Scientific American. 70 (17). April 28, 1894.
- Second Avenue Subway in the Borough of Manhattan, New York County: Environmental Impact Statement. 2004. pp. G1-6, G1-7.
- "Improvements At The Harlem River Bridge". Scientific American. 67 (27). December 31, 1892.
- "Railroad Engineering In Harlem.; Progress of the Work of Elevating the Central's Tracks in Park Avenue" (PDF). The New York Times. August 23, 1894. ISSN 0362-4331. Retrieved June 21, 2017.
- "To Raise The Central's Tracks.; The Park Avenue Improvement and the New Harlem Drawbridge" (PDF). The New York Times. April 24, 1893. Retrieved June 21, 2017.
- "A Great Drawbridge". The New York Times. February 14, 1894. Retrieved December 31, 2018.
- Hyatt, Elijah Clarence (1898). History of the New York & Harlem Railroad. Retrieved June 21, 2017.
- "Fitch Will Issue Bonds. Work on the Fourth Avenue Improvement to Be Resumed. The Comptroller Acting on Corporation Counsel's Advice". The Evening World. January 16, 1894. Retrieved December 31, 2018.
- "News of the Railroads; New York Central Trains Running Regularly over the New Viaduct and Bridge". The New York Times. February 16, 1897. ISSN 0362-4331. Retrieved January 1, 2019.
- Gray, Christopher (February 19, 1995). "The Park Avenue Railroad Viaduct: A $120 Million Renovation for an 1897 Behemoth". The New York Times. Retrieved August 15, 2009.
- Guide to Civil Engineering Projects In and Around New York City (2nd ed.). Metropolitan Section, American Society of Civil Engineers. 2009. pp. 52–53.
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