Missouri Secondary State Route Y St. Charles County
Missouri Secondary State Route Y is a north-south highway in Northern St. Charles County. It runs from Missouri State Route 79 to the St. Charles/Lincoln County Line. MO Sec St Rt Y does not pass through any towns in St. Charles County. MO Sec St Rt Y is not multi-plexed in St. Charles County. MO Sec St Rt Y intersects the following highways in St. Charles County. Missouri State Route 79, near O'Fallon.
