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 Golden Hill Bridge The Golden Hill Bridge is a historic bridge on Golden Hill Road over the Housatonic River in Lee, Massachusetts. It is a lenticular pony truss bridge built c. 1885 by the Berlin Iron Bridge Company, and is the state's oldest surviving bridge of this type. It is one of only five Berlin Co. bridges in the Berkshires, and is the only known surviving bridge to implement modifications to the pony truss design patented by William O. Douglas in 1885. The bridge was listed on the National Register of Historic Places in 1994. The Golden Hill Bridge is