N.Y.C. Admin. Code § 25-102: § 25-102 City map; what to include.

There shall be located and laid out on the city map all parks, playgrounds, streets, courtyards abutting streets, bridges, tunnels and approaches to bridges and tunnels, and improvements of navigation in accordance with bulkhead and pierhead lines established pursuant to section seven hundred five of the charter. The width and grades of all streets so located and laid out shall be indicated thereon.