Missouri Secondary State Route Y runs breifly in Southwestern Ralls County. It runs south east of Ralls County. MO Sec St Rt Y does not pass through any towns in Ralls County. MO Sec St Rt Y is not multi-plexed in Ralls County. MO Sec St Rt Y intersects the following highways in Ralls County. Missouri State Route 19, near Perry. Missouri State Route 154, near Perry.
