A beam or "girder" bridge is the simplest and most inexpensive kind of bridge. According to Craig Finley of Finley/McNary Engineering, "they're basically the vanillas of the bridge world." ...

Make a model suspension bridge to see how it works. After you test the strength of the beam bridge in Step 4, predict how many pennies your suspension bridge will support. 1. Cut two short pieces ...

Rachael Hood, Senior Editor The Stone Arch Bridge is a must-see for any architecture buff. This 2,100-foot granite and limestone bridge (featuring a total of 23 arches) was constructed in 1883 and ...