Dig Ticket Notifications

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.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.cityofchicago.org/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data.cityofchicago.org/api/views/cygx-ui4j
issued 2019-10-29
landingPage https://data.cityofchicago.org/d/cygx-ui4j
modified 2022-07-27
publisher data.cityofchicago.org
resource-type Dataset
source_datajson_identifier true
source_hash fb826d0ba2395071c0d4eec3d862c43b0c4e405d
source_schema_version 1.1
theme {Transportation}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • dig-ticket
  • excavation
  • geo
  • geoss
  • national
  • north-america
  • transportation
  • united-states
  • utilities
isopen False
license_id notspecified
license_title License not specified
maintainer Jonathan Levy
maintainer_email no-reply@data.cityofchicago.org
metadata_created 2025-11-21T19:38:42.628053
metadata_modified 2025-11-21T19:38:42.628056
notes 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.
num_resources 4
num_tags 12
title Dig Ticket Notifications