811 In Your State


Explore damage prevention information, local contacts and rules for safe digging in Michigan.

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MISS DIG System, Inc.
811 or 800-482-7171

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3285 Lapeer West Road
Auburn Hills, MI 48326

24 / 7

Advanced Notice: Not less than 72 hours and not more than 14 days
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.

Marks Valid: 21 days if digging is started within 14 days of dig start date
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.