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
Golden Hill Bridge in 1885. The town contracted for the trusses with the Berlin Iron Bridge Company, then a major producer of bridge trusses, and the bridge was completed for $1,000. In 1965, the state added a metal grid deck, and in 1970 it replaced the original deck supports with I-beams. In 1992, after the bridge was closed to vehicular traffic, the state began proceedings to consider replacement of the aging structure. It was further closed to pedestrians in 1996. The bridge finally underwent major restorative work in 2005, and is again open to traffic. Golden Hill Bridge The Golden Hill Bridge is