Mike O. Callaghan-Pat Tillman Memorial Bridge

The construction would also need electricity so two-hundred and twenty-two miles of a power transmission line was constructed from San Bernardino, California to the dam site. Now that there was a system of transportation and living, the dam site needed to be prepared and have materials brought in (Hoover Dam - FAQs).

The purpose of the project is to investigate the Construction Engineering infrastructure and process involved with the designing and building of the Goodwill Bridge.

To fix the failing infrastructure problem, one must identify why the structures, in this case bridges, are failing in the first place. Civil engineers have identified that the problem is not cause by one singular factor, but a multitude of factors including age, materials, environment, faulty design, and lack of maintenance. Environmental factors are the biggest concern engineers run into because it is

were very poor, but somehow, many architectural feats were being made. The U.S. Government was still building the greatest dam in the world before the Depression, the Hoover Dam, which lasted five years to build. It takes a lot of manpower and materials for the Government to build this great dam, so they hired contractors to build it and the The U.S. provides the materials. Men of six companies were hired to build the dam in 7 years or penalties will ensue; the men were called, Six Companies, Inc. Remarkably, the contractors banded together to build the dam because of the immense size of the structure, one contractor cannot do the task alone (America's Experiences). The Dams magnificent feat in becoming USA’s greatest dam inspired the same contracting firm to work on a certain bridge in the west (Hiktzik). During the time Hoover Dam was being constructed, out in the west, another architectural feat was occurring. In 1933 San Francisco, California, construction starts on what will soon to be one of America’s greatest landmarks, The Golden Gate Bridge. One of the bridges architects, Joseph B. Strauss, a man who built many bridges across the U.S., was involved in the bridge project. Strauss and his colleagues had to deal with many problems about the bridge such as people saying it had to be impossible or it was expensive and a hazard to the environment (History.com). Once the bridge was funded with thirty-five million dollars,

To help me explain this beautiful historic bridge, I will use Axiom 1, “Clues to the Culture. The Lewis and Clark Bridge that is located in Wolf Point, MT, literally bridges the gap between Roosevelt County and McCone County. It was built for the farmers on the south side of the Missouri River to have easier access to the railroad that runs along the hi-line on the north side of the Missouri. The railroad that was, and still is, used to haul the crops of many farmers located in McCone County. This bridge was essential in carrying on the livelihood of farmers located across the river. In 1997 the bridge to the east was built and the Lewis and Clark Bridge was closed. But it is still used to host parties in the late summer to celebrate the heritage

Bridges are a vital part of people’s everyday life and without them people would not be able to do nearly as much as is possible today. The weather in the outer banks of North Carolina is very rough and can be very detrimental to the various structures on them. When hurricanes come near North Carolina the outer banks are hit the worst. Bridges on the outer banks keep being destroyed by weather and so the people there have to think about the cost, the effectiveness, and the need between a strong expensive bridge that will be able to handle rough weather or a cheap quick to build bridges that may fall with any extreme weather.

Before steel bridges were built, trade had to be done through the use of ships and boats, slowing down the process. However, through the use of steel bridges, “the cost of travel and trade” has decreased by an enormous amount (“Introduction: What are bridges for?). Michael G. Barker, a professor in the College of Engineering and Applied Sciences at the University of Wyoming, collaborated with an engineering consultant and conducted some research on steel bridges. He studied two bridges-- one steel, and the other concrete, which were both built in 2012 in the same location, with the same dimensions, and looked very similar. In his study, he found that “the steel . . . superstructure provided a 25.8 percent cost savings, with an overall 19.3 percent savings in the total cost of the structure” than the concrete bridge. This clearly shows that steel bridges are not very costly as other types of

Initially during the construction and execution some minor problem arises which later on become major hurdle in the project. Initially the problem started with the conflict between multiplex and steel contractor company Cleveland Bridge.

The Hoover Dam was one of the most impressive piece of infrastructure ever made on U.S. soil. It was the biggest dam in the world upon its completion in 1935 (History.com staff, 2010). This structure when it was finished weighed more than 6,600,000 tons (Reclamation.gov, 2015). Some other specs of the structure are the width which is 1244 feet (Nix, 2015). The height of the Hoover Dam is 726.4 feet (Reclamation.gov, 2015). The cost to build this massive dam was 165 million dollars. This dam lies on the Nevada and Arizona border in the Black Canyon. The Hoover Dam was designed by many Geologist, Structural engineers, and Civil engineers. construction workers, steel workers, cement layers, truck drivers crane operators, and miners, make up the

Hecox (2011) says that the arch structure of the Tillman Bridge makes the canyon walls hold the weight of both vehicles and the bridge itself. In addition, the arch structure allows a better vision of the canyon for the drivers, which was a request of the population to the engineers of the project. In the other hand, according to Jones (2015), the truss structure of the new St. Anthony Bridge also was requested by the population because they wanted to keep a truss bridge in that place. The author also affirms that the St. Anthony Bridge is a truss, but the project team proposed adding a posttensioned concrete bottom chord to the steel truss in order to reinforce it. The project team made this choice because one bridge in Minnesota has collapsed in 2007, and the engineers wanted to lessen the fracture-critical issues to avoid a new catastrophe. In addition, this posttensioning approach wiil make the structure redundant for both resiliency and long-term durability. In conclusion, both bridge's structures were right chosen in order to provide safety and beauty in both

It is shaped in a way to transfer weight to the towers and anchors with its tension (O'Connor, 1971, p. 372). Cables are made of high strength wires spirally bound to form a rope (O'Connor, 1971, p. 372). Vertical cable suspenders that are fastened to the main cables hang the actual roadway. Stiffening girders and trusses are along the side of the bridge to distribute concentrated loads and help to keep the motion of the bridge at a minimum (Troitsky, 1994, p115).

The bridge has a very well designed ‘sustainability’ concept, relying on upcycled materials to complete the bridge. These upcycled materials consist of the wood, the fishing net, the oil barrels and the plastic shielding for the barrels. These materials can be used for functional roles in the design, such as platforms, floatation, safety lines across hand rails, and so on. The bridge’s sustainability concept can be further supported by the ease of replacing materials, and not throwing them in the bin. The materials such as wood, plastic and pieces of metallic bolts and nuts can be recycled and reused for other purposed such as furniture, storage or completely recycled back into a molten form for the metallic objects.

Because of advancements in today’s technology in construction field, many types of bridges are being constructed depending on the requirement and their suitability for the situations.

In designing the bridges, an engineer need to completely understand the problem to be solved. To design a safety and longevity bridges, they have to consider different types of loads, how and where they need to apply the load. They also have to undergo several steps that usually need in designing bridges such as understanding the problems, determining the potential loads of bridges, calculating the highest possible loads and calculate the amount of material need to counteract the loads.

The bridge is a self-anchored suspension bridge. It combined the reverse curvature of the deck, inclined towers and suspension cables to balance the forces in the system. The total length of cable used was 4.5 kilometers. The use of construction material was mainly steel, and the structure weights 1000 tonnes. There is a 150mm gap at each end of the bridge to permit the expansion of steel during the summer.