811 In Your State


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

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Ohio 811
811 or 800-362-2764

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4740 Belmont Avenue
Youngstown, OH 44505-1014

24 / 7

Advanced Notice: 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.

Marks Valid: as long as visible
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.