Although the main purpose of the Bridge tool is to make bridges you can also make a large variety of other objects.
I always start by making the bridge outline ties as shown here.
The bridge will be 10 meters wide, the main or center bridge length will be 60 meters and will have two side roads of 20 meters. The road will be placed at an altitude of 4 meters on both sides. To make a road you will always need a texture.
Once the main layout is finished and tested I then start drawing the vertical ties.
And this is the final view of the bridge in the scenery. All what is left to do now is add the bases of the bridge.
Bases are made using the cube.
Example 13 will show you some new parts to add to the bridge.