sentences:  West of Columbus Avenue, 79th Street continues and terminates in Riverside Park at a traffic circle directly after the exit/entrance ramps for the Henry Hudson Parkway, under which sit the 79th Street Boat Basin and its cafe.The street was designated by the Commissioners' Plan of 1811 that established the Manhattan street grid as one of 15 east-west streets that would be in width (while other streets were designated as in width).The interchange on the Hudson River and the boat basin was first proposed in 1934 and was constructed by 1937 during the tenure of Robert Moses as Parks Commissioner.