St. Nicholas Avenue is a major street that runs obliquely north-south through several blocks between 111th and 193rd Streets in the New York City borough of Manhattan. St. Nicholas Avenue serves as a border between the West Side of Harlem and Central Harlem. The route, which follows a course that is much older than the grid pattern of the Commissioners' Plan of 1811, passes through the neighborhoods of Harlem, Hamilton Heights, and Washington Heights. It is believed to follow the course of an old Indian trail that became an important road in the 17th century between the Dutch settlement of New Amsterdam and the British New England Colonies. In the post colonial era, it became the western end of the Boston Post Road. The road became a street when row housing was being built in Harlem during its rapid urban expansion following the end of the American Civil War.
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👉 Saint Nicholas Avenue (Manhattan) in the context of 155th Street (Manhattan)
155th Street is a crosstown street separating the Harlem and Washington Heights neighborhoods, in the New York City borough of Manhattan. It is the northernmost of the 155 crosstown streets mapped out in the Commissioner's Plan of 1811 that established the numbered street grid in Manhattan.
The street consists of upper and lower portions, linked only by a steep pedestrian stairwell. The upper portion starts on the West Side at Riverside Drive, crossing Broadway, Amsterdam Avenue, and St. Nicholas Avenue. At St. Nicholas Place, the terrain drops off steeply, forming Coogan's Bluff. 155th Street is carried on the 1,600-foot (490 m) long 155th Street Viaduct, a City Landmark constructed in 1893, that slopes down towards the Harlem River, continuing onto the Macombs Dam Bridge, crossing over (but not intersecting with) the Harlem River Drive. An unconnected lower section of 155th Street runs at ground level under the viaduct, between a dead-end west of Bradhurst Avenue and a service road of the Harlem River Drive.