BLM Road Numbers - Understanding Township and Range
BLM roads are identified numerically by a legal description based upon a rectangular grid, established from a point in northwest Portland, and spanning the State. From this point, Township grid lines run east and west; Range grid lines run north and south -each six miles apart. The resulting 6-mile squares called Townships are divided into 36 one-mile squares called Sections. Each section is approximately 640 acres.
BLM road signs in the field have three numbers. They identify the Township, Range, and Section from which a road originates. For example:
Numbers after the decimal point indicate another road originating in Section 14.