| ABCD's Bridge Design Tips for Kids: Provides tips for bridge-building projects, including topics such as form, connections, properties of balsa wood, links, and a bibliography. |
| Balsa Structure Tips: Offers advice on studying balsa wood to ensure good pieces. |
| Balsa Wood Bridge Info: Very detailed instructions on the construction of model bridges. Also has charts showing the properties of Balsa wood. |
| Balsawood Structure Design: An in depth analysis of test results of a balsa wood structure. |
| Bridge Building Contest: Description of a model bridge building contest. Also has tips on how to start your own contest. |
| Bridge Design Tips: Has specific advice for IOUM competitions, but also general model bridge building tips. |
| Bridge Over Cardboard Water: Contains instructions on how to build a toothpick truss bridge. Includes a print-friendly version. |
| Bridge Truss Designs: Pictures of various standard trusses including the Warren, Howe, Pratt, and different variations. |
| Model Bridge Design: Tips and advice about designing and building model bridges from basswood and balsa. |
| Physics Balsa Bridge Building Contest: Records, rules and tips for this twenty year old contest along with hundreds of photographs of bridges. |
| Technology and Bridge Design: A bridge building activity with glossary terms. |
| Tom's Tips for Structure Competitions: Offers basic tips on model bridges. |
Classical
