Missouri Secondary State Route NN is a short east-west highway in North-Central Macon County. MO Sec St Rt NN does not pass through any towns in Macon County. MO Sec St Rt NN is not multi-plexed in Macon County. MO Sec St Rt NN intersects the following highway in Macon County. U.S. Rt. 63, near La Plata.
