Seeking prosperity
The Romans may be considered the champion bridge builders of history, but the legacy of the Inca people in South America is just as significant. The secret of the Inca empire lay in its bridges; hundreds of suspended bridges were necessary to connect the 10,000 mile network of stone roads. These bridges had stone abutments and anchors on each side of the canyon, and they were suspended from massive cables of woven Ichu, a grass with hemp-like qualities. There were two top cables acting as guardrails, and two bottom cables that supported an integrated wooden deck of braided branches. Ironically, the fact that the bridges were strong enough to support the Spanish Conquistadors on their horses, actually hastened the fall of the empire.
Published: February 28, 2006