The History of the Golden Gate Bridge
– Stretching across the San Francisco Bay stands the world famous Golden Gate Bridge. The bridge is located in one of nature’s most beautiful settings, spanning the mile-wide bay from Fort Point in San Francisco to the Marin County Shore. Joseph Strauss, specializing in bridge building, was the leader of the construction of the Golden Gate Bridge. The start of construction began on January 5, 1993 and, after four years, was completed on April 27, 1997. The bridge was needed to be built because of the growing population after the California Gold Rush….
The San Francisco-Oakland Bay Bridge
– About eighty years ago, engineers were able to build a bridge on time and within budget with no problem; today, most of the projects take extra time and money to finish. What exactly happened between now and eighty years ago that caused such a drastic shift. It is clearly not the engineers nor the technology; in fact, those have only improved over time. Today, engineers are faced with much more than designing and building the infrastructure, as they were before. They compete with politicians for funds, fight for the safety of workers, and protect our environment by adhering to the numerous laws and acts set forth by the government….
The Millau Viaduct and The Hampden Bridge
– … One of the great engineering feats when building this bridge was the use of steel. Despite its maximum height of 343m span of 2.46km, 280m above the valley floor, the bridge is actually quite light. 242,000 tonnes seems like a lot but without the use of steel on the structure, this bridge would have been more than twice as heavy. Steel is a much stronger material than concrete, so can support more weight with less mass. The actual road deck, which is comprised almost entirely of steel, only weighs 36,000 tonnes….
Suspension Bridge at Location D
– … Suspension bridges are visually appealing and light yet strong and durable. Suspension bridges are made from enormous cables that reach from one end of the bridge to the other. These cables rest on top of high towers and swoop down. They are fastened by anchorages that are on both ends of the bridge, which help stabilize the bridge. Most of the weight of the bridge is carried by wires that drop to the road surface from the main cables. These wires help evenly allocate the weight of the bridge and keep the cables sturdily in place….
The Clifton Suspension Bridge
– … It’s been the venue for significant cultural events like the first modern bungee jump in 1979, the last Concorde flight in 2003 and a handover for the Olympic Torch relay in 2012. This bridge has made a rather small city in England notable because of its long lasting structure. The bridge towers are not identical in design. The Clifton tower has sides cut-outs, the Leigh tower has more pointed arches. The 25metre tall Leigh Woods tower stands on top a 34 metre red sandstone-clad abutment. In 2002 it was people found out that the tower was not a solid as it could but it did contain 12 vaulted chambers up to 11 metres high, linked by only shafts and tunnels….