Explore damage prevention information, local contacts and rules for safe digging in Montana.
Montana 811
Advanced Notice
2 business days
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.
2 business 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
30 Days
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.
30 Days
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.
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