How did the Inka
keep their suspension bridges safe?

The Inka communities served by the bridges were required to maintain them as part of their service to the Empire. Bridges were often completely replaced with new materials every year or two. Today, a bridge at Q'eswachaka in Peru is rebuilt every year by local communities using traditional Inka engineering techniques. This bridge has been continually rebuilt at this spot since the time of the Inka.

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