Bridge construction is a popular classroom activity. However, the basic principles of tension, compression, and counterbalance are not always clearly represented and defined. The common materials used to construct model bridges, such as straws, toothpicks, Legos[TM], and building blocks, are often too flexible or stationary to demonstrate the principles that keep bridges upright and functional. If the basic principles are not clearly demonstrated, students will fail to understand how bridges are able to support heavy loads. Upper elementary and middle school students can design simple models that demonstrate the essential elements and basic principles of bridge design. In this article, the author discusses how designing model bridges addresses several of ITEA's Standards for Technological Literacy.