Section line road
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In many jurisdictions, roads were run along every section line, giving access to previously remote areas and serving in many instances as firebreaks. A road or arterial in which the centerline is laid out along a section line boundary is often referred to as a section line road or section line arterial. In Lubbock, Texas, Oklahoma City; Boise, Idaho; metropolitan areas of Arizona (most notably Phoenix and Tucson); and much of the Las Vegas Valley, all major thoroughfares run along section lines, producing a readily identifiable grid.
In some locales, section lines were designated as the basis for the street numbering system. In Tulsa, Oklahoma for example, it can be correctly assumed that 191st Street is exactly seventeen miles beyond 21st Street, each "block" representing one-tenth of a mile.