Provides tips for bridge-building projects, including topics such as form, connections, properties of balsa wood, links, and a bibliography.

Offers advice on studying balsa wood to ensure good pieces.

Very detailed instructions on the construction of model bridges. Also has charts showing the properties of Balsa wood.

An in depth analysis of test results of a balsa wood structure.

Description of a model bridge building contest. Also has tips on how to start your own contest.

Has specific advice for IOUM competitions, but also general model bridge building tips.

Pictures of various standard trusses including the Warren, Howe, Pratt, and different variations.

Offers basic tips on model bridge structures.

Displays pictures and a description of how to build a Popsicle bridge. Photos of completed bridges.

In-depth look at Balsa wood. Includes pictures of the different grain types, and tips on how to use each.

Tips and advice about designing and building model bridges from basswood and balsa.

Records, rules and tips for this twenty year old contest along with hundreds of photographs of bridges.

Designed as a resource for DI model bridge competitions, but the basic principles will work for anyone.

A bridge building activity with glossary terms.