Once it enters Spring Valley (where it is known locally first as South Main Street, then as North Main Street after it crosses its very busy intersection with NY 59), NY 45 continues northward through the downtown business district. Traffic here tends to pile up many times a day. After NY 45's intersection at Hillcrest with CR 74 (the location of several small shopping centers), traffic tends to ease up. North of there, NY 45 provides a link to the Hassidic Jewish community of New Square, although it never enters the village limits. At CR 80, NY 45 enters New Hempstead. Again the road becomes relatively quiet, but it begins to parallel the Palisades Interstate Parkway, until its intersection at exit 12 in Pomona. NY 45 quickly leaves Pomona and enters Mount Ivy. This is where NY 45 comes to its northern terminus at US 202. This area of US 202 is in downtown Mount Ivy, and exit 13 of the Palisades is just west of NY 45's northern terminus.