When designing and constructing the bridge, we knew that we wanted there to be an arch shape, so that the weight would be distributed evenly along the sticks. Additionally, we knew we wanted to use triangles because they are the strongest shape structurally.We also knew that the glue would be stronger than the wood itself, and we wanted as much overlap and places to glue as possible. To achieve this, we tried to make a gradual curve with lots of popsicle sticks overlapping each other, making the two main support pieces much thicker than the rest of the bridge. Then, we built the feet of the bridge, and built supports off of the feet and connected them to the arches with triangles. We made sure that all joints and connections were reinforced with other sticks as well, to distribute the weight evenly.
Video of Bridge Collapse: