Missouri Secondary State Route U runs north-south in Marion County. It goes from U.S. Rt. 24/36, near Rensselaer, to Missouri Secondary State Route C, near Palmyra. MO Sec St Rt U does not pass through any towns in Marion County. MO Sec St Rt U is not multi-plexed in Marion County. MO Sec St Rt U intersects the following highways in Marion County. U.S. Rt. 24, near Rensselaer. U.S. Rt. 36, near Rensselaer.
