Bridge project

When building my bridge, I will use the tooth picks to build it. it will be twelve inches long and three inches wide. The problem with the bridge is that I have to build a bridge that will hold up to at least forty pounds. The bridge will at least be about three inches tall too along with the top part of the bridge is going to be eight inches long. I will be using the toothpicks and cutting them so they will be the sizes I want them to be. Also, the toothpicks will be shaped into triangles.