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Explore damage prevention information, local contacts and rules for safe digging in Illinois.
811 or 800-892-0123
3275 Executive DriveJoliet, IL 60431
24 / 7
48-hour notice (two working days), but no more than a 14-calendar day advance notice prior to the start of excavationNumber of days in advance of a digging project that you need to notify the one call center of your intent to dig.
Marks Valid: Life of the ticket or until marks become indistinguishable.
811 or 312-744-7000
2 working days (48 hours)Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.