Реферат: Bridges 2 Essay Research Paper Beam Bridge

world. Modern bridges use a bow sectioned roadway suspended from cables made from

extremely strong high tensile steel wires. The main cables, supported by the twin towers,

have to be securely anchored to the ground on either side of the bridge. Using suspension

bridges have an advantage that they are cheap and give long clear spans, making them the

most economical method of bridging large spans.