Missouri Secondary State Route AT is a short connector route between Missouri State Route 100 and U.S. Rt. 50 near Villa Ridge, in Franklin County. This is also signed as being a portion of Historical Route 66. MO Sec Rt AT passes through the following town in Franklin County. Villa Ridge MO Sec AT is not multi-plexed in Franklin County. MO Sec AT intersects the following highways in Franklin County. Missouri State Route 100, near Villa Ridge. Missouri Secondary State Route M, near Villa Ridge.
A guide marker on WB U.S. Rt. 50. A guide marker on EB U.S. Rt. 50. A BGS on EB I-44/U.S. Rt. 50. A BGS on WB I-44. EB MO Sec St Rt AT east of U.S. Rt. 50. EB MO St Rt AT at MO Sec St Rt O. EB MO Sec St Rt AT north of MO Sec St Rt O. EB MO Sec St Rt AT south of MO Sec St Rt M. A junction marker on EB MO St Rt 100.
