Bridge Building and Design


The art of building a bridge outof toothpicks isn't easy. So I thought that I would give you a few pointers.

1. You need to work togther as a team
2. Make a drawing or sketch of what you want to build. Even though this will probably not be close to what you will be building, it will still get you thinking about what kind of bridge you want to build.
3. Don't use too much glue. Too much glue takes a longer time to dry.
There are a few differnt types of bridges.

There are 4 major types of bridges. We have a separate page for each type of bridge. Please go to one of the following pages.
Beam - The beam type is the simplest type of bridge. The beam bridge could be anything as simple as a plank of wood to a complex structure. It is made of two or more supports which hold up a beam.
arch.gifArch - In the arch type of bridge, weight is carried outward along two paths, curving toward the ground.

Suspension/Cable-stayed - The deck (trafficway) of a suspension bridge is hung by cables which hang from towers. The cables transfer the weight to the towers, which transfer the weight to the ground.
Cable-stayed bridges have towers, but cables from the towers go directly to the road deck, instead of spanning from tower to tower.
cantilever.gifCantilever - In the cantilever type of bridge, two beams support another beam, which is where the deck or trafficway is. The two beams must be anchored, and this must be done well.