 The current B61 bus route begins at 20th Street and Prospect Park West at the north end of Green-Wood Cemetery and adjacent to the defunct Bishop Ford Central Catholic High School, straddling the Park Slope, South Slope, and Windsor Terrace neighborhoods.Northbound, the route turns west at 9th Street near New York Methodist Hospital, continuing west through Gowanus and Red Hook via 9th Street, Lorraine Street, and Beard Street (eastbound) or Van Dyke Street (westbound).Much of this routing in Gowanus and Red Hook between Smith Street and the Red Hook IKEA Terminal is shared with the , the only other bus line that travels to and from Red Hook.