Below is my initial bridge design drawn by hand, scaled as best I could. The bridge is just a combination of triangles, the strongest shape. I wanted to concentrate more members in the middle because that's where the most tension and compression on the bridge will be in the bridge. I might add members on the sides to give the bridge more support, but at this point I will see how the bridge hold up. Below is the design of my bridge and the cost of the bridge, which comes out to be $98,000.
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| Figure 1: Top and Side View of Bridge Design |
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| Figure 2: Bridge Materials Cost |
Since this was a preliminary design, it didn't change much, if at all. I felt like it was extremely difficult to visualize the bridge on paper without the bridges in front of time. There were times when it took me a second to know which member would go in the place (if there was even a member size that would fit it). The thing that I learned about while designing this bridge is the application of geometry. If you aren't using the right size members, you're bridge will not be able to fit or be built.
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