The track would continue to operate as a horse-racing course until 1910 when horse betting was criminalized in New York state. Afterward it operated as an auto racing track from 1915 to 1919. The decline of the Sheepshead Bay Race Track, along with the construction of amusement parks at nearby Coney Island and the proximity of Coney Island's attractions to the newly built subway, led to the decline of Sheepshead Bay as a tourist destination. Passenger rail service on the Manhattan Beach Branch ceased in 1924, and the line was formally abandoned in 1937. The former race track site was subdivided for the construction of housing, and Millionaire's Row was soon lined with bungalows. The closure of the race track resulted in a plethora of newly vacant plots in the community of Sheepshead Bay, and by extension, an influx of residents.