Cannabis Indica October 12, 2016October 12, 2016 thcscience_admin The following highways are numbered 23A: United States[edit] Maryland Route 23A (former) Nebraska Spur 23A County Route 23A (Monmouth County, New Jersey) New York State Route 23A County Route 23A (Rockland County, New York) County Route 23A (Schuyler County, New York) List of roads or other routes with the same name