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Maryland 811 rules

In Maryland you call Miss Utility: at least 3 business days after the ticket is filed. Ticket life: 12 business days after selected start work date; repeat notification if work not done within ticket period or scope expands.

Advance notice before digging
At least 3 business days after the ticket is filed.
Farthest ahead you can call
12 business days after ticket initiated.
How long the ticket or marks last
12 business days after selected start work date; repeat notification if work not done within ticket period or scope expands.
Tolerance zone (hand dig inside it)
Hand-expose before mechanized equipment within 18 inches of a marking.
White lining (premarking)
Not confirmed in the law we read. Ask Miss Utility.
The law
Md. Code, Public Utilities §§12-101 to 12-135 (notice §12-124; renotify §12-125).

Good to know: Wait for Ticket Check to show every owner has responded before you dig.

Call 811 from anywhere in Maryland to reach Miss Utility, or file online at missutility.net/maryland.

Running several digs at once?

TrackOver keeps each ticket number, markout date and expiry on the job it belongs to, and warns before a ticket runs out, so the crew in the hole isn't digging on a dead ticket.

811 ticket trackingFind dig work on the board

Where this comes from

Checked September 24, 2026 against the state's own statute or rule text. Rules change; confirm with the center before a big job.

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