The May 24, 1987 event celebrating the bridge's 50th anniversary was organized by the "Friends of the Golden Gate Bridge," a group made up of five members of the bridge district board of directors. The group expected a crowd of 80,000 people, but instead received an estimated 800,000 people at the event.
The weight of the 300,000 people flattened the normally arched roadbed, although bridge engineers later said there was never any real danger.
"The Golden Gate Bridge, all 419,000 tons of it, groaned and swayed like an old wooden plank thrown across a ditch," Montgomery wrote. "Frightened and seasick people vomited on their shoes."
Is the above story true? Did the bridge actually flatten back in 1987? Unfortunately I can't find any conclusive evidence in Google search.