At first I concentrated to build a bridge that is successful and safe for the truck to pass. Than I started to remove parts, change beams from solid to hollow, and also the thickness of beams, in order to decrease the bridge cost. Originally the whole bridge was composed of solid carbon steel beams of thinkness of 140m, which was changed in to variouse cheaper parts. It went from a large and tall bridge with a peak on top to a simple and straight bridge. The estimated cost decreased from 586,000 dollars to a current cost of 351,588.53 dollars. One main thing I learned is that it is extremely difficult to make a perfect bridge that is completely steady. Therefore, I realized the design does not have to be fancy and complicated to make the bridge survive. In addition I learned to use different types of parts for certain areas of bridge, such as to use solid and strong beams on the outer edge of the structure. I also picked up on few techniques on how to decrease the cost for the bridge. For example, a solid beam can be replaced by two hollow beams to be just as efficient, but still be able to save a little over a thousand dollars.
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