Missouri Secondary State Route Y is a shorth north-south highway in East-Central Pemiscot County. This highway head south off the eastern end of Missouri State Route 84, at Interstate 155/U.S. Rt. 412. MO Sec St Rt Y does not pass through any towns in Pemiscot County. MO Sec St Rt Y is not multi-plexed in Pemiscot County. MO Sec St Rt Y intersects the following highways in Pemiscot County. Interstate 155, near Caruthersville. U.S. Rt. 412, near Caruthersville. Missouri State Route 84, near Caruthersville.