How to Make a Truss Bridge With Popsicle Sticks

Written by jose leiva
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How to Make a Truss Bridge With Popsicle Sticks
A truss bridge uses a framework of beams for sturdiness. (Bridge image by Luke Haverkamp from Fotolia.com)

A truss is basically a frame made of beams that makes a structure sturdier. A truss bridge employs this framework in order to support more weight. Making a truss bridge using Popsicle sticks is a simple project that teaches children about bridges, physics and engineering.

Skill level:
Easy

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Things you need

  • 23 Popsicle sticks
  • Multipurpose glue

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Instructions

  1. 1

    Glue two Popsicle sticks to each other so that the two widths of the stick meet to create a length of wood twice as long as a single stick. Repeat this step with two more sticks.

  2. 2

    Place the two long sticks parallel to each other and at about a stick's length from each other. Attach a stick to either end perpendicular to the longer sticks but parallel to each other. This will make the frame for the deck of the truss bridge.

  3. 3

    Attach another stick perpendicular to the longer sticks of the frame, at the centre of the frame.

  4. 4

    Attach a stick diagonally from one corner of the frame to the centre of the frame, and a second stick diagonally from the opposite corner of the frame to the centre of the frame. Each diagonal stick should attach to opposite corners and to a different side of the centre of the frame. This will create the truss frame for the base of the bridge.

  5. 5

    Make a triangle using three sticks. Attach each of the sticks to each other at the corners. Repeat this step once more to create a second triangle.

  6. 6

    Attach two sticks to the tip of one of the triangles. Each stick should be parallel to the base of the triangle and moving away from each other. Repeat this step with the second triangle.

  7. 7

    Attach a stick at either end of the two sticks, moving away from the tip of one of the triangles and to the corner of the base of the triangle. This will create a trapezoid shape for the sides of the truss bridge. Repeat this step with the second triangle.

  8. 8

    Attach the sides of the bridge to the base of the bridge. Each side should be perpendicular to the base with the shorter sides of the trapezoids pointing away from the base.

  9. 9

    Attach two Popsicle sticks to connect the two trapezoids at the top of the bridge. These sticks should be perpendicular to the longer sides of the base of the bridge.

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