Bridge Research and Methods Essay

1314 Words Dec 28th, 2011 6 Pages
8/25/11
Engineering Research
Ms. Carter
Background: The I-35W Bridge ran over the Mississippi river in Minneapolis, Minnesota. It was about 1,900 feet long and was eight lanes wide (MPR News, 2007). The bridge was made up of three parts of steel truss, the deck, superstructure, and substructure. The formation of it was a split deck, meaning the longitudinal trusses were parallel to traffic. The bridge was built and ready for traffic by 1967. The bridge on average would have about 150,000 cars drive across it each day (MPR News, 2007). As years went on, the bridge started to show signs of wear and tear. The concrete was starting to cracks and there were signs of failure all along the bridge. Minnesota Department of Transportation had a
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If the engineers would have came up with these new materials or materials to solve these problems, the bridge most likely could have had a longer life and it would have been easier and cheaper to fix if a problem did go wrong with the bridge.
Mechanical Engineering: Structurally the I-35W Bridge is a force to be reckoned with, with dimensions of 1,900 feet long and eight lanes wide. As stated before, the bridge is a major interstate traffic flow with carrying many people across it every day to and from Minneapolis. The constructors of the bridge knew before building it that it would need to be heavily relied on with safety because of the amount of traffic and how much traffic it could actually get on it at one point. The issue with the engineers and all other skilled workers that were used to come up with this design was that lack of or the technique of trying to save money. The reason for the less money method was that the money being used to build the bridge was a good portion of tax payer money. The engineers had to think of every think possible that could happen to the bridge and fix it to where it would not cause a problem if this thing did happen. They had to take into account all different types of ways to build the bridge, in which they finally decided on a solution of making longitudinal trusses. Also, the engineers

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