From Legacy Wiki
Below are some recommendations 1) get thick minimize paper which include construction paper so it's going to be long lasting. It doesnt must be constructuon, if its thick paper its the better.
2) Design your format... Draw a little demo of what you bridge should seem like
3) Body.... The frame really should be extensive rolled up paper that will keep the bridge up. Examine an image with the Golden State Bridge therefore you can see how the body goes approximately a substantial position then curves down.
4) Bars... following the body is up, set some paper bars to hold it up. It'll act as help to the body.
5) Glue or tape almost everything jointly. I counsel duct consider induce its less sticky, but if you decide on glue, make positive its potent gorilla glue, not elmers.
6) your bridge should really now have got a: body, assist bars, road, flate layout surface.
See Below How to make strong paper?