CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins83% CONFIDENCEOverall confidence: 83%How well the pin's source and references back up its dates.Weighted average of how firmly 9 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better89.4 years ago
Happened as dated, per the source[1]: "opened on May 27, 1937".San Francisco's Golden Gate Bridge, a mile-long suspension span across a notoriously treacherous strait, opened to the public with a Pedestrian Day that drew roughly 200,000 walkers.
$35M
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