Until 2005, the southern terminus of the southern portion of NY 878 was at Meadow Causeway. At the time, the portion of the Nassau Expressway from Meadow Causeway to the Seagirt Boulevard interchange was maintained by Nassau County while the section between the Seagirt Boulevard interchange and the Atlantic Beach Bridge toll barrier was maintained by the NYSDOT as NY 900V, a long reference route. In 2005, NY 878 was extended south to its present terminus at the Atlantic Beach Bridge toll barrier, resulting in an overlap with NY 900V. The NY 900V designation, now redundant to NY 878, was removed by October 2007.