New York State Route 357 is an east-west highway in Northwestern Delaware County. It runs from the Delaware/Otsego County Line, near Unadilla, to New York State Route 28, at Franklin. NY St Rt 357 passes through the following towns in Delaware County. Sidney Franklin NY St Rt 357 is not multi-plexed in Delaware County. NY St Rt 357 intersects the following highways in Delaware County. Interstate 88, at Sidney. New York State Route 28, at Franklin.