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The current dataset consists of only ONE post record for each mile point along each UNDIVIDED route sections where data was available. For undivided route sections precedence is given to the P (positive) side milepost record, when present. Otherwise the M (minus) side milepost is used, if it is present and valid. For DIVIDED route sections TWO post records have been selected for use where they exist (one for both directions of travel). The data were collected orginally in 2001-02 with updates from 2005 and 2007; it still may contain some gaps that are currently being re-surveyed. (Note: not all attributes were available for some records due to variances in how and when the data were aquired). This dataset is NOT complete. 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