When referring specifically to the Lower Manhattan business district and its immediate environs , the northern border is commonly designated by thoroughfares approximately a mile-and-a-half south of 14th Street and a mile north of the island 's southern tip : Chambers Street from near the Hudson east to the Brooklyn Bridge entrances and overpass .
When referring specifically to the lower Manhattan business district such as Wall Street and its immediate environs , the northern border is commonly designated by thoroughfares approximately a mile-and-a-half ( 3 km ) south of 14th Street and a mile ( 2 km ) north of the island 's southern tip : Chambers Street from near the Hudson east to the Brooklyn Bridge entrances and overpass .