F · worse than 97% of San Francisco intersections

49 collisions in 5 years, 1 fatal, 939 street-condition 311 reports in 3 years. District 3

PARTIAL

Get the letter
The corner, three ways

Broadway and Columbus

AUDITED
San Francisco, District 3
Street View plus Gemini
Broadway and Columbus today, photographed by Google Street View AI visualization of a proposed fix at Broadway and Columbus. Not a photograph.

TodayThe corner as Street View last photographed it. Imagery: Google.

Official record
Case fileevery date read from a stored record, none invented
  1. DataSFScored from the city's own recordsdate not recorded
  2. Google MapsPhotographedchecking the stored frame
  3. ExaPress readchecking stored coverage
  4. ApifyResidents heardchecking stored scrapes
  5. GeminiVisual auditchecking the stored audit
  6. GeminiFix drawnchecking the stored render
  7. The gateLetter verifiedchecking the stored letter
  8. YouSent: that part is yoursthe letter is drafted, never sent by us

Press coverage

found live, cited Press via Exa

Resident voices

scraped
Injury collisions, last 5 years
within 150m
Street-condition 311 reports, 3 years
within 150m
Supervisor district

The ask

DRAFT ONLY
Proposed fix
Continental crosswalks, corner daylighting, and a leading pedestrian interval
$250,000 to $350,000, order of magnitude
Funding route
Caltrans Highway Safety Improvement Program (HSIP)
NOT SENT TO ANY OFFICIAL
Dear Supervisor Sauter, I am writing to you as a concerned resident of District 3 regarding the critical safety issues at the intersection of Broadway and Columbus. City records show 48 injury collisions within 150 meters of this intersection in the last five years, including one fatality. This figure covers a 150-meter radius, while the Danger Index grade is computed over a tighter 80-meter core, so these two figures are measured over different areas and a reader should not expect them to reconcile. The intersection shows more reported harm than 97 percent of San Francisco intersections, earning an F grade on the Danger Index. No exposure normalization: the index ranks reported harm, not risk per crossing. In the last three years, there have been 940 street-condition 311 reports at this location, counting street defects, sidewalk and curb, signs, streetlights, and blocked sidewalks only. While no recent press coverage was found, press coverage of safety problems at this intersection goes back at least 12 years, to 2014, which is the earliest coverage we can find. An automated visual audit flagged faded or sub-standard crosswalk markings and a vehicle turning conflict zone. City records corroborate these observations, showing 311 reports: 15 in 12 months for crosswalks, and 4 pedestrian crossing collisions in 5 years related to both issues. Additionally, city records show 311 reports: 5 in 12 months relating to inadequate street lighting and 311 reports: 7 in 12 months relating to curb or sidewalk in poor condition. I urge you to support funding for Continental crosswalks, corner daylighting, and a leading pedestrian interval at this intersection. An estimated $250,000 to $350,000 could be secured through the Caltrans Highway Safety Improvement Program (HSIP) to implement these vital improvements. Thank you for your attention to this urgent matter. Sincerely, A resident of District 3
draftedby Gemini

Every figure in this letter is checked against the source records before it is shown. A draft that states something the records do not support is rejected and rewritten.

Powered by

Google GeminiGeminiAudits the real Street View frame for hazards, renders the fix, writes the letter
ExaExaFinds current press coverage of this intersection, cited
ApifyApifyScrapes what residents say on Reddit and Google Maps
Google MapsGoogle MapsStreet View frames, the corner thumbnail, and the city map
CloudflareCloudflareWorkers serve the page, KV holds corners, imagery and grades
DataSFDataSFCollisions and 311, queried by radius around the corner

Every claim about a dangerous corner, graded and traced to its source, ending in a picture of the fix and a letter to the Supervisor.