 Main Street, a two-lane road providing access to the Canandaigua Lake boat launch south of this point, widens to four lanes in preparation for the junction with NY 5, US 20 and NY 21 immediately south of downtown.At the intersection, South Main Street loses the NY 942T designation and becomes NY 332.NY 21, concurrent with Routes 5 and 20 west of Main Street, separates from NY 5 and US 20 and turns north onto Main Street, joining NY 332 to form an overlap northward through downtown Canandaigua.