MadeDesign.com

Physics Balsa Bridge Building Contest
Records, rules and tips for this twenty year old contest along with hundreds of photographs of bridges.
www.balsabridge.com/

Bridge Building Contest
Description of a model bridge building contest. Also has tips on how to start your own contest.
www.iit.edu/

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.
www.abcdpittsburgh.org/

Balsa Wood Bridge Info
Very detailed instructions on the construction of model bridges. Also has charts showing the properties of Balsa wood.
www.zimsweb.com/

Bridge Over Cardboard Water
Contains instructions on how to build a toothpick truss bridge. Includes a print-friendly version.
www.yesmag.bc.ca/

Technology and Bridge Design
A bridge building activity with glossary terms.
projects.edtech.sandi.net/

Bridge Truss Designs
Pictures of various standard trusses including the Warren, Howe, Pratt, and different variations.
www.geocities.com/

Model Bridge Design
Tips and advice about designing and building model bridges from basswood and balsa.
www.garrettsbridges.com/

Bridge Design Tips
Has specific advice for IOUM competitions, but also general model bridge building tips.
php.indiana.edu/

Juntunen Bridge Systems
Develop software for bridge design, analysis and structural engineering applications. Products include a beam analysis program and a windows application that calculates section properties for composite beams.
www.bap2.com/