F · worse than 99% of San Francisco intersections

51 collisions in 5 years, 2 fatal, 215 street-condition 311 reports in 3 years

PARTIAL

Get the letter
The corner, three ways

16th and Valencia

AUDITED
San Francisco, district unresolved
Street View plus Gemini
16th and Valencia today, photographed by Google Street View AI visualization of a proposed fix at 16th and Valencia. 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 Fielder, I am writing to you as a resident of District 9 regarding urgent safety concerns at the intersection of 16th and Valencia Streets. City records document 51 injury collisions within 150 meters of this intersection in the last five years, including 2 fatalities. This figure covers a 150-meter radius, while the Danger Index is computed over a tighter 80-meter core, so these figures are measured over different areas and should not be expected to reconcile. Additionally, 215 street-condition 311 reports, covering street defects, sidewalk and curb, signs, streetlights, and blocked sidewalks, have been filed at this location in the last three years. This intersection shows more reported harm than 99 percent of San Francisco intersections, earning a grade F on the Danger Index. No exposure normalization: the index ranks reported harm, not risk per crossing. I respectfully request your support in securing funding for critical safety improvements through the Caltrans Highway Safety Improvement Program (HSIP). Specifically, I urge you to advocate for Continental crosswalks, corner daylighting, and a leading pedestrian interval at 16th and Valencia. The estimated cost for these enhancements is in the order of $250,000 to $350,000. Thank you for your attention to this urgent matter. Sincerely, A resident of District 9
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.

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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.