Problems that Engineers Have When Building Bridges
Engineers deal with stress. Stress is when pressure from weight causes friction to its cause of weight with what the bridge is held in place. Some engineers use triangles to level the stress from the bridge which decreasesd the chance that it collapses.
We designed a "truss bridge" which is making triangles on the sides that takes most of the stress that is built in and also have triangles on the top. We used popsicle sticks to make the triangles and glued them to a rectangular prams on all sides.