The Golden Gate Bridge

On the 50th anniversary of the completion of the Golden Gate Bridge, it was opened up to pedestrians. Some 250,000 people came out to stand on the bridge (stand, my professor says, because there were so many people that you couldn't walk). There was going to be a special boat ride, where one of the builders of the bridge was to be boat-ed under the bridge. However, he looked up and saw that instead of the nice natural curve that the bridge had when he'd helped build it, there was no arch- it was flat because the weight of 250,000 people was more than the bridge had been built to withstand.