Jackson Heights, Queens Heights is on a grid, with the major exceptions of streets surrounding Astoria Boulevard, Junction Boulevard, the Brooklyn-Queens Expressway, and Grand Central Parkway. However, there are a few side streets of note in Jackson Heights. Jackson Mill Road, which is actually two roads in Jackson Heights and East Elmhurst, was formerly a streetcar line, and was one of several "Bowery Bay Roads" leading to Bowery Bay. The rest of the original Jackson Mill Road was destroyed by the construction of the LaGuardia Airport, but sections exist between 94th and 95th Streets near 24th Avenue; between 96th and 97th Streets near
Jackson Heights, Queens to move in by the 1940s and blacks by 1968. Beginning in the 1960s, an influx of newly immigrated residents came into Jackson Heights, at the same time that existing residents were leaving for suburbs due to white flight. Hispanic immigrants moved in by the 1970s. By then, white residents who remained in the neighborhood wished to eliminate the stigma of Jackson Heights being an ethnically diverse neighborhood, often defining its border as Roosevelt Avenue, because crime had started to increase in the area. By the mid-1970s, South American organized crime groups in Jackson Heights, often peddling drugs, gained national