Saved Chicago Data research

Changes in Chicago pothole service requests

Examine Chicago pothole-request frequency changes and fitted turns, with original monthly counts, status-cohort caveats and source dates.

Scan evaluated November 9, 2026 · 84 qualifying candidates · 0 annual-only contexts · 83 frequency flags · 2 turn flags

What this measure can tell us

Pothole observations count service requests by creation date. They are not a road-condition survey or a count of completed repairs. Reporting access, repeated requests, weather and administrative practice may all matter, but this screen does not estimate their individual effects.

The two frequency windows each cover 12 complete months, so each contains every season once. That reduces one simple seasonal mismatch; it is not seasonal adjustment. An unusually harsh winter, changed request classification or later corrections could still affect an annual comparison.

Status remains the published value at retrieval. Recent Open cohorts are younger than old ones, and a fall in old Open requests may just mean those records have had time to close. Compare unfiltered incoming requests before interpreting a status-specific candidate as an improvement or deterioration in the streets.

Source: 311 Service Requests, City of Chicago Data Portal. Source updates after the saved retrieval dates are not incorporated into this preview.

Browse the saved evidence

All conditions are listed alphabetically. With JavaScript, choose a signal to rank within this dataset; scores are review priorities, not statistical confidence.

84 evidence records

Exact saved counts · no source refresh

Questions worth asking next

  • Does the difference survive removal of the status filter?
  • Is the change concentrated in one season or spread through the year?
  • Could reporting practice differ between communities?

Except for explicitly documented case-study follow-ups, these are proposed checks, not completed investigations. The numerical screen cannot choose among causal explanations.

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