1. Draw a rough profile view of your suspension bridge on paper, including the horizontal roadway, two vertical towers and the curved suspension cables. The cables should begin at one end of the roadway, curve up to the top of one tower, curve to the next tower and end at the other end of the roadway. Trace the drawing onto a second sheet of paper so you have two identical profile views.
2. Lay popsicle sticks over the horizontal roadway of both drawings, gluing them to each other. Lay sticks for the towers, gluing them to each other and to the roadway.
3. Lay popsicle sticks along the curved lines for the cables. If the sticks are too long to follow the graceful curves of your cables, cut them in half with a hacksaw. Glue these sticks to each other, to the roadway and to the towers on both of your drawings.
4. Allow the glue to dry completely. Remove both units from the paper. You will now have two identical halves of the bridge. Stand both halves up parallel to each other and prop them in place with books, less than one popsicle stick apart from each other.
5. Apply a bead of glue to the top of the roadway on each half of the bridge. Beginning at one end of the roadway, lay popsicle sticks perpendicular to each half of the bridge, with the end of each stick resting in the bead of glue. Continue laying sticks all the way across the roadway.
6. Glue a popsicle stick from the top of the tower on one half of the bridge to the corresponding tower top on the other half, temporarily holding it in place with clothes pins. Repeat with the other tower. Optionally add more supporting popsicle sticks between towers, if desired. Remove books and clothes pins when dry.