Even numbers are east-west, increasing from south to north.
Odd numbers are north-south, increasing from east to west.
CR 46, CR 88 and CR 89 are anomalous. Columbia County highways are almost all relatively long-distance routes. Many of them continue across state highways, often spanning much of the length or breadth of the County. Also, several consist of two or more discrete segments, either discontiguous or intersecting. Most of the roads in the county belong to the Towns, the county designations being conservatively distributed.