Golden Gate Bridge to a site near the bridge. In May 1987, as part of the 50th anniversary celebration, the Golden Gate Bridge district again closed the bridge to automobile traffic and allowed pedestrians to cross the bridge. However, this celebration attracted 750,000 to 1,000,000 people, and ineffective crowd control meant the bridge became congested with roughly 300,000 people, causing the center span of the bridge to flatten out under the weight. Although the bridge is designed to flex in that way under heavy loads, and was estimated not to have exceeded 40% of the yielding stress of the suspension cables, bridge officials
Hell Gate Bridge the bridges are more than long. The Tyne Bridge in Newcastle, England, and the Sydney Harbour Bridge in New South Wales, Australia, derived their own designs from the Hell Gate Bridge. The Sydney Harbour Bridge, however, is about 60% larger than the Hell Gate Bridge. The bridge was conceived in the early 1900s to link New York and the Pennsylvania Railroad (PRR) with New England and the New York, New Haven, and Hartford Railroad (NH). In June 1906, the NH applied for and received a franchise to operate trains from the northeastern suburbs of New York City to Pennsylvania Station