19th and Mission

Dear Supervisor Fielder, I am writing to you regarding significant safety concerns at the intersection of 19th and Mission Streets in District 9. City records show 23 injury collisions within 150 meters of this intersection in the last five years. This figure covers a 150-meter radius, while the Danger Index grade is computed over a tighter 80-meter core, so the two figures are measured over different areas and a reader should not expect them to reconcile. Furthermore, there have been 200 street-condition 311 reports at this location in the last three years, counting street defects, sidewalk and curb, signs, streetlights and blocked sidewalks only. This intersection shows more reported harm than 91 percent of San Francisco intersections, which is grade D on the Danger Index. No exposure normalization: the index ranks reported harm, not risk per crossing. No press coverage was found for this corner in the recent search window, although press coverage of safety problems at this intersection goes back at least 12 years, to 2014, which is the earliest coverage we can find. The automated visual audit flagged faded or sub-standard crosswalk markings in the Street View photograph, and city records corroborate it: 311 reports: 3 in 12 months, 2 pedestrian crossing collisions in 5 years. The audit also flagged a vehicle turning conflict zone in the Street View photograph, and city records corroborate it: 2 pedestrian crossing collisions in 5 years. City records show 311 reports: 16 in 12 months relating to curb or sidewalk in poor condition, although the visual audit did not find it in the photograph. I urge you to fund Continental crosswalks, corner daylighting, and a leading pedestrian interval, estimated $250,000 to $350,000, order of magnitude, through the Caltrans Highway Safety Improvement Program (HSIP). Thank you for your attention to this critical safety matter. Sincerely, A resident of District 9