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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Dig Ticket Notifications

    Metadata Updated: April 12, 2026

    In order to help contractors and private residents avoid existing utility lines (including gas, electrical, and water lines) when digging, the Chicago Department of Transportation maintains 811 Chicago, a free, 24-hour service to private contractors and homeowners in Chicago. Anyone planning to dig within Chicago must obtain a “dig ticket” from 811 Chicago. 811 Chicago notifies all utilities of the impending excavations. The utility owners then send out staff to mark the location of the underground facilities within 48 hours (excluding emergencies), not counting Saturdays, Sundays, and holidays.

    This dataset shows these utility notifications. Since it is common for the same dig ticket to produce multiple notifications, the same dig ticket will appear multiple times and this dataset cannot be used without further refinement to count, map, or analyze unique excavations in Chicago.

    See https://ipi.cityofchicago.org/Digger for more information on the dig ticket system.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date November 10, 2020
    Metadata Updated Date April 12, 2026

    Metadata Source

    Harvested from Chicago JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 10, 2020
    Metadata Updated Date April 12, 2026
    Publisher data.cityofchicago.org
    Maintainer
    Identifier https://data.cityofchicago.org/api/views/cygx-ui4j
    Data First Published 2019-10-29
    Data Last Modified 2026-04-11
    Category Transportation
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.cityofchicago.org/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id ec5de830-cb21-43b9-9c41-8a3dafaa9bff
    Harvest Source Id 7590e386-229e-453a-8e53-6f18e200e421
    Harvest Source Title Chicago JSON
    Homepage URL https://data.cityofchicago.org/d/cygx-ui4j
    Source Datajson Identifier True
    Source Hash 17041525d14d492fc2d0f55be2af49831505f5b5c1c051c58c486b73740266ef
    Source Schema Version 1.1

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