New York State Route 31B ( NY 31B ) was a state highway in central New York in the United States . It served as a connector between NY 31 , its parent route , in the Cayuga County village of Weedsport and NY 5 in the Onondaga County town of Elbridge . NY 31B was assigned c . 1933 , replacing New York State Route 293 , a route assigned as part of the 1930 renumbering of state highways in New York . The NY 31B designation was removed in 1980 and replaced by County Route 31B ( CR 31B ) in Cayuga County and CR 99 in Onondaga County .