Keywords: Columbiana County 424.svg Columbiana County Ohio as seen at http //www flickr com/photos/dougtone/7985136885/ Based on File US DOT FHWA MUTCD SHS 2004 3-7 M1-6 450x450mm 000 svg 2013-07-16 02 01 46 own Minh Nguyen cc-zero Uploaded with UploadWizard Diagrams of county route markers with county name 0424 424 number Diagrams of route markers of Columbiana County Ohio |