Arkansas State Route 51 in three section isn Clark County. This highway enters from Hot Springs County and runs to Arkadelphia. West of Arkadelphia, this highway appears again. AR St Rt 51 runs from their to U.S. Rt. 67, near the Nevada/Clark County line. The last section runs from U.S. Rt. 67 near Beirne to Whelen Springs at Arkansas State Route 53.
