What Are the Seven Main Types of Bridges?
A cable-stayed bridge take off from traditional suspension bridges. bridge image by Antons Trifonovs from Fotolia.com Bridges are structures designed to span or overcome obstructions, or obstacles like a body of water, a canyon or another road. With increases in technology and construction methods, bridges are able to span huge distances and carry heavier traffic loads than ever before. But, while the scale of bridge building has expanded, the main types of bridges are mostly the same as humans have been using for ages. Suspension Suspension bridges are able to span the longest distance of any bridge type—up to 7,000 feet in span. The most basic suspension bridges are made from wood and rope, but these are usually rickety and generally quite dangerous. Modern suspension bridges, as stated on Design-Technology.org, use high-tensile steel wires that are bound together to form a strong cable that supports the weight of the roadway. One cable may contain thousands of individual steel wir
