6/23/2023 0 Comments Quickmap dot ca gov mobile![]() ![]() For example, the two postmiles ALA 84 23.133 and ALA 84 R23.133 differ only by the presence of the "R" Postmile Prefix Code, but they represent two Whether or not a single qualifier is present. Sometimes, two postmile specifications, representing two distinct geographic locations, differ only in They must be present for the postmile specification to be valid. The Route Suffix Code, Postmile Prefix Code and Postmile Suffix Code are referred to as "qualifiers." Not all postmile specifications require their presence. The Postmile Value may be accompanied by a Postmile Prefix Code (immediately before the postmile value) and/or a Postmile Suffix Code (immediately after the postmile value). Postmile Value continues to increase as though no boundary had been crossed, and is marked by a Postmile Prefix Code of "D" - duplicate postmile at meandering county line.) (Exception: when the border between two counties meanders, so that the route crosses the same border several times, the Thus, Postmile Values reset to zero each time The Postmile Value measures the distance, in miles, from the start of the route, or from the point at which the route enters the county. The route is identified by a 1-3 digit number, and a Route Suffix Code for those routes that require one. The county is specified by its 2- or 3-letter county code (e.g., SAC for Sacramento, SB for Santa Barbara). A postmile has three principal components: a County, a Route and a Postmile Value.
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