Missouri State Route 33 is a north-south highway in South-Central De Kalb County. It runs from Maysville, to the Clinton/De Kalb County Line. MO St Rt 33 passes through the following towns in De Kalb County. Maysville MO St Rt 33 is multi-plexed in De Kalb County. U.S. Rt. 36, near Osborn. Missouri State Route 110, near Osborn. MO St Rt 33 intersects the following highways in De Kalb County. Missouri State Route 6, at Maysville. Missouri Secondary State Route A, at Maysville. Missouri Secondary State Route O, near Maysville. Missouri Secondary State Route RA, near Osborn. U.S. Rt. 36, near Osborn. Missouri State Route 110, near Osborn. Missouri Secondary State Route M, near Osborn.
