Final bridge project

The final bridge project! Audrey and I were set out to build a bridge without any diagrams to follow. As if this wasn't challenging enough, we had to consider the cost too. Even though this was a huge challenge, we had a ton of fun.

After changing our plans over and over again, we finally decided to go with an arch bridge. Our original plan was to do a truss bridge with an arch on the bottom to support.

This is Audrey making one side of the arch. One of the problems we had to solve was getting the arch to have flat ends, so it could stand up.

We finally ended up with a standing bridge. The bridge was wobbly, so we added rods connecting both sides. The rods are also where we laid the "road".

We faced another problem. The "road" was to big to fit between the sides. All we had to do to solve the problem was rebuild the "road" with smaller k'nex.

Yeah! We ended up with a bridge to test! The final cost was $18,000. We used a total of 311 pieces, and the total weight was 782.9 grams.

Oh no! Our bridge collapsed on itself. Although it doesn't have a great strength to weight ratio, the design was thought through, and the bridge had an aesthetic appeal and followed the guidelines. It will be displayed at parents night.