Missouri Secondary State Route RA is a short north-south highway in Lincoln County. It runs from Missouri Secondary State Route E, near Silex, north to the William R. Logan Conservation Area. MO Sec St Rt RA does not pass through any towns in Lincoln County. MO Sec St Rt RA is not multi-plexed in Lincoln County. MO Sec St Rt RA intersects the following highway in Lincoln County. Missouri Secondary State Route E, near Silex.