155th Street starts on the West Side at Riverside Drive, crossing Broadway, Amsterdam Avenue and <answer>St. Nicholas</answer> Avenue. At <answer>St. Nicholas</answer> Place, the terrain drops off steeply, and 155th Street is carried on a 1,600-foot (490 m) long 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. A separate, unconnected section of 155th Street runs under the viaduct, connecting Bradhurst Avenue and the Harlem River Drive.
155th Street crosses Broadway, Amsterdam Avenue, and what other Avenue?
St. Nicholas