An arch bridge refers to a type of bridge that uses an arched platform or structuring for extra strength. Pedestrian bridges that involve an arched platform are easy to build and great for areas such as gardens or light trails. Drawing one of these arch bridges does not have to be a difficult task, as patience and practice will assist you more than anything else.
Sketch out two arched lines perpendicular to each other. The ends of each line should be at the same height as the other end of the same line, while the gradual ascent to the middle point is proportionally the same. If you need assistance in creating these lines, use a protractor to guide you.
Draw half-inch, vertical lines down from each end of the lower arched line you have just drawn. Connect these two vertical lines with a third arched line that will run perpendicular to the above line. This process thickens the base of the arched bridge.
Sketch vertical lines, evenly spaced, that will connect the upper arched line with the lower base. These vertical lines represent the structured posts that hold the railing of the bridge to the base. The posts should be about an inch thick, so use the ruler to assist you in defining these parts of the bridge.
Draw half-inch, vertical lines up from each end of the upper arched line to thicken the railing of your bridge. Connect the tops of these vertical lines with a fourth arched line, running perpendicular to all other lines of the same type.
Trace all of the lines of the arch bridge with an ink pen to create a bolder look to this image. Carefully follow each of the intended lines, ensuring that you do not make any erratic mistakes along the way. Let the ink dry, then erase all of the pencil marks that remain on the page.