AI firms pour $3M/year into Bay Bridge billboards, sparking ad arms race
Billboards along the Bay Bridge now command $200‑$250 k a month—up 20‑30 % from pre‑pandemic rates—so AI, tech and finance firms are paying up to $3 M a year for a single sign. The spend signals a shift toward high‑visibility, offline branding as the AI boom fuels an outdoor‑ad arms race.