Missouri Secondary State Route OO is a north-south highway in Eastern Franklin County. It runs from BUSN Loop I-44 at Pacific, north along the Franklin/St. Louis County Line. MO Sec St Rt OO passes through the following town in Franklin County. Pacific MO Sec St Rt OO is not multi-plexed in Franklin County. MO Sec St Rt OO crosses the following highways in Franklin County. BUSN Loop I-44, at Pacific.
A junction marker on WB BUSN Loop I-44. A junction marker on EB BUSN Loop I-44. A guide marker on EB BUSN Loop I-44. A junction marker on NB MO Sec St Rt F.
